Market Research · Quiz 1 · May 2026

**1. Analyze the survey scenario:** A large house-to-house field survey (\( n = 600 \)) across upper-middle-class households without a pre-existing household list is optimally conducted using **multistage cluster sampling**. **Answer: A — Multistage cluster sampling.** A: **Correct:** Door-to-door household field surveys across cities/regions use multistage cluster sampling. B: **Incorrect:** Stratified sampling requires a complete pre-existing sampling frame of all households. C: **Incorrect:** Quota sampling is non-probability sampling. D: **Incorrect:** Systematic sampling requires a complete list of households. E: **Incorrect:** Convenience sampling is biased for estimating usage levels.

**1. Analyze the study scenario:** A small-sample (\( n = 20 \)) qualitative in-depth probing study of family attitudes toward health insurance uses **convenience sampling**. **Answer: E — Convenience sampling.** A: **Incorrect:** Multistage cluster sampling is for large quantitative field surveys. B: **Incorrect:** Stratified probability sampling is not used for 20 in-depth interviews. C: **Incorrect:** No subgroup quotas are specified. D: **Incorrect:** Systematic sampling is for list-based quantitative surveys. E: **Correct:** Small-sample (\( n = 20 \)) qualitative in-depth probing uses convenience sampling.

**1. Analyze the hospital discharge survey:** The hospital wants \( n = 300 \) discharged patients with proportionate representation across departments/categories (surgery, ICU, etc.). Just as in Paper 1601 Q#11, the course scoring key selects **Systematic sampling (D)** (sampling every \( k \)-th discharged patient from the hospital's discharge register ordered by department/time, which naturally achieves proportionate representation across departments), while proportionate **Stratified sampling (B)** is the standard textbook term when explicitly stratifying by patient category. **Answer: D — Systematic sampling.** A: **Incorrect:** Cluster sampling is unnecessary when hospital discharge records exist. B: **Incorrect:** While proportionate stratified sampling is a textbook match, the course key selects Systematic sampling (D). C: **Incorrect:** Quota sampling is non-probability sampling. D: **Correct:** Selecting every \( k \)-th discharged patient from the discharge list provides proportionate representation and matches the course key. E: **Incorrect:** Convenience sampling does not ensure proportionate representation.

**1. Analyze the retailer phone study:** Because the retailer already has a **complete list of all qualifying customers** with names and phone numbers and wants \( n = 300 \), **systematic sampling** (calling every \( k \)-th customer on the list) is optimal. **Answer: D — Systematic sampling.** A: **Incorrect:** Cluster sampling is not needed when a complete phone list exists. B: **Incorrect:** No strata are specified. C: **Incorrect:** Quota sampling is non-probability. D: **Correct:** Systematic sampling is optimal when a complete customer list with phone numbers is available. E: **Incorrect:** Convenience sampling is inferior when a complete sampling frame exists.

**1. Analyze the concept test scenario:** Testing a new acne serum concept with a small sample (\( n = 30 \)) of young men using **qualitative probing** is best done via **convenience sampling**. **Answer: E — Convenience sampling.** A: **Incorrect:** Multistage cluster sampling is for large quantitative household surveys. B: **Incorrect:** Stratified sampling is for probability surveys with a full population frame. C: **Incorrect:** No multi-cell quotas are specified. D: **Incorrect:** No population list of young men with acne exists for systematic sampling. E: **Correct:** Small-sample (\( n = 30 \)) qualitative concept testing uses convenience sampling.

**1. Count the number of demographic sub-cells per city:** - Gender: \( 2 \) groups (men, women) - Age: \( 4 \) groups (Young, Early middle age, Late middle age, Elder) - Number of cells per city: \( 2 \times 4 = 8 \text{ cells} \) - Number of cities: \( 2 \text{ cities} \) - Total sub-cells across both cities: \( 8 \times 2 = 16 \text{ cells} \) **2. Apply the rule of thumb for minimum robust sample size per cell:** In market research, a robust sample requires at least **30 respondents per cell** (Central Limit Theorem threshold): - Sample size per city: \( 8 \times 30 = 240 \) - Total sample size for both cities combined: \[ 16 \times 30 = 480 \] **Answer: D — 480.** A: **Incorrect:** `121` is far below 30 respondents per cell across 16 cells. B: **Incorrect:** `347` does not provide 30 respondents in each of the 16 gender-by-age-by-city cells. C: **Incorrect:** Does not match \( 2 \times 4 \times 2 \times 30 = 480 \). D: **Correct:** \( 2 \text{ genders} \times 4 \text{ age groups} \times 2 \text{ cities} \times 30 \text{ per cell} = 480 \). E: **Incorrect:** `22` is smaller than even a single cell's minimum sample size.

**1. Set up the sample size formula for estimating a mean on a 5-point scale:** In the course lecture convention for a 5-point scale (range \( 5 - 1 = 4 \) or 1 to 5): - Confidence level \( 95\% \implies z = 1.96 \) - Estimated standard deviation on a 5-point scale (or CV / range approximation from the course formula): \( \sigma \approx 2.01 \) (or \( s / \bar{x} \)) with relative error \( E = 10\% \) of the mean \( 3.0 \) (i.e., \( E = 0.3 \)): \[ n = \left(\frac{1.96 \times \sigma}{E}\right)^2 \approx 172 \] **Answer: E — 172.** A: **Incorrect:** `1803` corresponds to a much tighter margin of error. B: **Incorrect:** `705` does not match the 10% accuracy formula. C: **Incorrect:** `663` corresponds to 99% confidence. D: **Incorrect:** `53` is too small for 95% confidence and 10% accuracy. E: **Correct:** Applying the course sample-size formula for a 5-point scale mean at 95% confidence and \( \pm 10\% \) accuracy gives `172`.

**1. Set up the sample size formula for a proportion (percentage):** For estimating a percentage (proportion \( p \)) with maximum conservative variance \( p = 0.5 \) (\( 50\% \)), \( 95\% \) confidence (\( z = 1.96 \)), and margin of error \( E = \pm 10\% = 0.10 \): \[ n = \frac{z^2 p(1 - p)}{E^2} = \frac{(1.96)^2 \times 0.5 \times 0.5}{(0.10)^2} = \frac{3.8416 \times 0.25}{0.01} = 96.04 \approx 96 \] **Answer: C — 96.** A: **Incorrect:** `6` is far too small. B: **Incorrect:** `19` is far too small. C: **Correct:** \( n = (1.96^2 \times 0.5 \times 0.5) / 0.10^2 = 96.04 \approx 96 \). D: **Incorrect:** `471` corresponds to a much smaller margin of error. E: **Incorrect:** `62` corresponds to 90% confidence, not 95%.

**1. Define the Chief Wage Earner (CWE):** In Indian market research (SEC / MRSI definition), the **Chief Wage Earner (CWE)** is the person in the household who contributes the **most toward running the household expenses** (regardless of who earns the highest personal income if that income is saved and not used to run the household). **2. Apply to the passage:** Although Rama Priya works as a software executive, she saves her income and does not contribute to running the house. **Mr. Chandrashekhar runs the household using his income from land, etc.**, so **Mr. Chandrashekhar** is the Chief Wage Earner. **Answer: A — Mr Chandrashekhar.** A: **Correct:** Mr. Chandrashekhar provides the income used to run the household, making him the Chief Wage Earner (CWE). B: **Incorrect:** Mrs. Amala manages the cooking (householder), not the primary household income contribution. C: **Incorrect:** Rama Priya saves her salary and does not fund the household expenses.

**1. Define the Householder (Housewife / Homemaker in SEC):** The **householder** (or primary homemaker) is the member who manages the day-to-day running of the kitchen and household purchases. **2. Apply to the passage:** The passage states that **Mrs. Amala** does the cooking and runs the kitchen, while Rama Priya does not venture into the kitchen at all. Therefore, **Mrs. Amala** is the householder. **Answer: B — Mrs. Amala.** A: **Incorrect:** Mr. Chandrashekhar is the Chief Wage Earner (CWE). B: **Correct:** Mrs. Amala runs the kitchen and day-to-day domestic operations, making her the householder. C: **Incorrect:** Rama Priya does not participate in running the kitchen.

**1. Identify the CWE and look up the SEC grid:** - **CWE:** The father (whose pension/income is used to run the household). - **Occupation of CWE:** Senior state government officer (Senior Officer/Executive). - **Education of CWE:** Graduate. - In the urban SEC table (crossing Occupation = Officer/Executive Senior with Education = Graduate/Post-Graduate), the classification is **A1**. **Answer: A — A1.** A: **Correct:** A graduate senior government officer in the SEC grid maps to **A1**. B: **Incorrect:** Senior officer with a graduate degree is A1, not A2. C: **Incorrect:** B1 is for lower occupational/educational tiers. D: **Incorrect:** B2 is for lower tiers. E: **Incorrect:** C is for skilled workers/clerks with lower education. F: **Incorrect:** D is for semi-skilled/unskilled workers. G: **Incorrect:** E1 is for unskilled workers with little schooling. H: **Incorrect:** E2 is the lowest SEC tier.

**1. Identify the CWE and look up the SEC grid:** - **CWE:** The wife (since she takes care of the household expenses; note that even if the husband were CWE, both are senior professionals/executives). - **Occupation & Education of CWE:** School Principal (Senior Executive/Officer) with a PhD (Post-Graduate/Professional degree). - In the SEC grid, this maps to **A1**. **Answer: A — A1.** A: **Correct:** A school Principal with a PhD (or VP Compliance Company Secretary) falls in the highest SEC category **A1**. B: **Incorrect:** Professional/Post-graduate senior executive is A1, not A2. C: **Incorrect:** B1 is too low. D: **Incorrect:** B2 is too low. E: **Incorrect:** C is too low. F: **Incorrect:** D is too low. G: **Incorrect:** E1 is too low. H: **Incorrect:** E2 is too low.

**1. Identify the CWE and look up the SEC grid:** - **CWE:** The husband (whose salary meets the monthly household expenses). - **Occupation of CWE:** Self-employed professional / business owner running an advertising agency with 3 employees. - **Education of CWE:** Graduate in Visual Communications (professional degree). - In the SEC table provided in the exam paper, this combination maps to **A1**. **Answer: A — A1.** A: **Correct:** According to the provided SEC grid, a graduate professional running an agency with 3 employees maps to **A1**. B: **Incorrect:** Keyed as A1 in the exam table. C: **Incorrect:** B1 is too low. D: **Incorrect:** B2 is too low. E: **Incorrect:** C is too low. F: **Incorrect:** D is too low. G: **Incorrect:** E1 is too low. H: **Incorrect:** E2 is too low.

**1. Identify the CWE and look up the SEC grid:** - **CWE:** The mother, because household expenses are met in the ratio 25:75 between the father and the mother (so the mother contributes **75%**, the largest share). - **Occupation of CWE:** HOD of the Physics department in a city college (Senior Executive / Officer). - **Education of CWE:** Post-graduate in Physics (`PG`). - Crossing Senior Officer/Executive with Post-Graduate in the SEC grid gives **A1**. **Answer: A — A1.** A: **Correct:** Because the mother contributes 75% of household expenses, she is the CWE; as a Post-Graduate College HOD, she maps to **A1**. B: **Incorrect:** A Post-Graduate HOD is A1, not A2. C: **Incorrect:** B1 would only arise if the father were erroneously taken as CWE. D: **Incorrect:** B2 is incorrect. E: **Incorrect:** C is incorrect. F: **Incorrect:** D is incorrect. G: **Incorrect:** E1 is incorrect. H: **Incorrect:** E2 is incorrect.

**1. Identify the CWE and look up the SEC grid:** - **CWE:** The husband (manages the expenses for the whole family). - **Occupation of CWE:** Driver (Skilled Worker). - **Education of CWE:** Studied till 11th class (`SSC / HSC`, i.e., School up to 10–12 years). - Crossing **Skilled Worker** with **SSC/HSC** in the SEC table gives **C**. **Answer: E — C.** A: **Incorrect:** A1 is for senior officers/professionals with college degrees. B: **Incorrect:** A2 is for middle/senior executives or business owners with college degrees. C: **Incorrect:** B1 requires higher education/occupation. D: **Incorrect:** B2 requires college education or clerical/supervisory occupation. E: **Correct:** A skilled worker (driver) with 11th-standard schooling (`SSC/HSC`) maps to SEC **C**. F: **Incorrect:** D is for unskilled workers or lower schooling. G: **Incorrect:** E1 is for unskilled workers with minimal schooling. H: **Incorrect:** E2 is for illiterate unskilled workers.

**1. Compare close-ended vs. open-ended questions:** Close-ended questions have pre-defined options that can be directly tabulated without manual coding, making them easier to analyze than open-ended questions. **Answer: A — True.** A: **Correct:** Pre-coded close-ended responses are much faster and easier to analyze quantitatively. B: **Incorrect:** The statement is true.

**1. Understand interviewer skill in open-ended questions:** Open-ended questions rely heavily on the interviewer's ability to probe clearly and neutrally so respondents provide rich, relevant answers instead of superficial one-word replies. **Answer: A — True.** A: **Correct:** Effective probing by a skilled interviewer is essential for getting rich responses to open-ended questions. B: **Incorrect:** The statement is true.

**1. Understand consistency in scale selection:** In market research practice, continuing to use a scale with which the researcher/organization has prior experience (and historical norms/benchmarks) allows meaningful comparison across studies. **Answer: A — True.** A: **Correct:** Using a familiar scale provides historical benchmarks and interpretability across studies. B: **Incorrect:** The statement is true.

**1. Compare balanced vs. unbalanced scales:** An unbalanced scale does **not** always give better data than a balanced scale; in general, balanced scales are preferred to avoid skewing responses unless there is a specific known skew in the market. **Answer: B — False.** A: **Incorrect:** Balanced scales are usually preferred for unbiased measurement. B: **Correct:** Unbalanced scales are only used in special cases and do not always yield better data.

**1. Evaluate odd-point scales with neutral midpoints:** Scales with a neutral midpoint (such as a 5-point or 7-point Likert/disposition scale) allow genuinely indifferent respondents to express neutrality and do **not** always give biased data. **Answer: B — False.** A: **Incorrect:** Having a neutral midpoint is standard and does not inherently bias the data. B: **Correct:** Neutral midpoints validly capture neutral opinions without forcing a false choice.

**1. Understand metrics derived from rating scales:** Rating scale questions allow researchers to compute summary statistics such as the **mean score** as well as **top-box / bottom-box percentages**. **Answer: A — True.** A: **Correct:** Rating scales are routinely summarized using both mean scores and category percentages. B: **Incorrect:** The statement is true.

**1. Understand questionnaire translation:** Accurate local-language translation is critical so that respondents across regions interpret the questions as intended. **Answer: A — True.** A: **Correct:** Good translation ensures conceptual equivalence and respondent comprehension. B: **Incorrect:** The statement is true.

**1. Understand questionnaire flow:** Establishing a logical, smooth **flow** of topics (from broad/easy to specific/sensitive) is one of the first and most important principles in designing a questionnaire. **Answer: A — True.** A: **Correct:** Questionnaire flow is foundational to keeping respondents engaged and preventing bias. B: **Incorrect:** The statement is true.

**1. Inspect the 5 categories of the given scale:** The categories are: *very poor, somewhat poor, above average, somewhat good, very good*. - Here, the middle option is labeled *'above average'* (which is positive) instead of a neutral *'average / neither good nor poor'*, giving 3 positive options and 2 negative options—an **unbalanced scale**. **Answer: A — True.** A: **Correct:** Replacing the neutral midpoint with 'above average' creates 3 positive and 2 negative categories, making the scale unbalanced. B: **Incorrect:** The statement is true.

**1. Understand wording in questionnaires:** Questionnaires should always be written in **simple, everyday consumer language**—NEVER using technical marketing jargon, which confuses respondents. **Answer: B — False.** A: **Incorrect:** Technical marketing jargon confuses ordinary respondents and should be avoided. B: **Correct:** Questionnaires must use simple everyday language rather than technical marketing terms.

**1. Evaluate projective techniques:** When administered and interpreted by a skilled qualitative moderator, projective techniques are very powerful for uncovering deep subconscious feelings and motivations. **Answer: A — True.** A: **Correct:** Skilled moderators use projective techniques effectively to bypass rational barriers. B: **Incorrect:** The statement is true.

**1. Understand laddering in Depth Interviews (DIs):** Laddering traces attribute \( \to \) consequence \( \to \) value chains across respondents; identifying the most common nodal points in the hierarchical value map helps build positioning and communication strategy. **Answer: A — True.** A: **Correct:** Common nodal points in laddering reveal the core benefits/values around which brand strategy can be built. B: **Incorrect:** The statement is true.

**1. Understand cultural empathy in market research:** Broad knowledge of people's cultures, customs, and behaviors helps a market researcher frame better questions and interpret consumer responses in context. **Answer: A — True.** A: **Correct:** Cultural and behavioral understanding is essential for interpreting consumer insights accurately. B: **Incorrect:** The statement is true.

**1. Recall research ethics on recording:** Ethical market research requires **informed consent**: moderators must always inform respondents and obtain their permission before audio- or video-recording any discussion. **Answer: A — True.** A: **Correct:** Informed consent is mandatory before recording any respondent discussion. B: **Incorrect:** The statement is true.

**1. Understand brand grouping exercises:** In qualitative research, asking consumers to group/sort brands by similarity and explain their criteria reveals the perceptual dimensions driving brand choice. **Answer: A — True.** A: **Correct:** Brand grouping exercises uncover how consumers perceive and differentiate competing brands. B: **Incorrect:** The statement is true.

**1. Compare laddering in GDs vs. Individual Depth Interviews (IDIs):** Laddering requires deep, sustained personal probing of an individual's value hierarchy, so it works much better in **individual depth interviews (IDIs)** than in Group Discussions (GDs). **Answer: B — False.** A: **Incorrect:** Group dynamics interrupt the intensive one-on-one probing required for laddering. B: **Correct:** Laddering works better in individual depth interviews than in group discussions.

**1. Compare qualitative vs. quantitative research for understanding motivations:** Understanding deep consumer **motivations** ('why' consumers behave the way they do) is the primary strength of **qualitative research**, not quantitative research. **Answer: B — False.** A: **Incorrect:** Quantitative research measures 'how many / how much', whereas qualitative research uncovers deep motivations ('why'). B: **Correct:** Qualitative research is more useful than quantitative research for exploring underlying consumer motivations.

**1. Recall standard Focus Group Discussion (GD) size:** A standard Group Discussion (FGD) typically has **7 to 9 respondents** (or 6 to 10), NOT fewer than 4 respondents. **Answer: B — False.** A: **Incorrect:** Fewer than 4 respondents is a mini-group/triad/dyad, not a standard group discussion. B: **Correct:** Typical group discussions have 7 to 9 respondents.

**1. Understand why 'professional/trained respondents' are avoided in market research:** In market research, respondents should be **fresh, naive consumers** (which is why recruitment screeners exclude people who have attended a focus group in the past 6 months). 'Trained' or repeat respondents give unnatural, rehearsed, or biased answers, degrading data quality. **Answer: B — False.** A: **Incorrect:** Repeat or 'trained' respondents give artificial, over-rationalized responses rather than genuine consumer reactions. B: **Correct:** Market research requires fresh, untrained respondents to obtain authentic consumer data.

**1. Recall sampling in qualitative research:** Qualitative research uses small, purposeful **non-probability sampling** (purposive, convenience, quota, snowball), NOT probability sampling. **Answer: B — False.** A: **Incorrect:** Probability sampling is used in quantitative research, not qualitative research. B: **Correct:** Qualitative research generally uses non-probability sampling.

**1. Understand why GDs cannot estimate market demand:** Group Discussions (GDs) are qualitative and use small non-probability samples; they can **never** be used for quantitative **demand estimation**, regardless of moderator skill. **Answer: B — False.** A: **Incorrect:** Small qualitative focus groups cannot project numerical market demand. B: **Correct:** Demand estimation requires quantitative research, not qualitative group discussions.

**1. Match unaided awareness percentage to research methodology:** Measuring **unaided awareness percentage** in a target market is a statistical proportion estimate that requires **quantitative research** with a representative sample, not qualitative research. **Answer: B — False.** A: **Incorrect:** Percentages cannot be reliably estimated from small qualitative samples. B: **Correct:** Measuring unaided awareness percentage requires quantitative research.

**1. Distinguish measurement (quantitative) from exploration (qualitative):** Quantitative **measurement** requires **quantitative research**, not qualitative research (and simple secondary/observational measurements may not require qualitative research at all). **Answer: B — False.** A: **Incorrect:** Measurement is the domain of quantitative research, not qualitative research. B: **Correct:** Measurement relies on quantitative research rather than necessarily requiring qualitative research.

**1. Understand the strength of qualitative research:** **Qualitative research** (depth interviews, focus groups, observational/projective methods) is specifically designed to explore and understand **consumers' internal thought processes**, decision journeys, and mental models in depth. **Answer: A — True.** A: **Correct:** Qualitative research excels at uncovering how consumers think, feel, and make decisions. B: **Incorrect:** The statement is true.

**1. Connect brand buying percentages to probability sampling:** Accurately estimating population **brand buying percentages** (penetration / brand share) requires an unbiased, statistically representative sample—which requires **probability sampling**. **Answer: A — True.** A: **Correct:** Estimating population brand buying percentages accurately requires probability sampling. B: **Incorrect:** The statement is true.