Reliability in market research depends on the number of people questioned and whether they represent everyone.

• A. The reliability depends on the number of people questioned and whether they represent everyone.
• B. The reliability depends only on the skill of the interviewer.
• C. Reliability is not important in market research.
• D. Reliability depends on the color of survey forms.

Answer: (A)

Reliability in market research comes from two things: having enough responses and making sure those responses represent the wider audience you want to understand. If you question a large number of people who mirror the diversity of the market, you’re more likely to get stable results that would look similar if the study were repeated. This is why larger, representative samples reduce sampling error and make findings more trustworthy.

So the best answer is that reliability depends on both how many people are questioned and whether they represent everyone. For example, surveying 2,000 shoppers from different ages, regions, and incomes will give a more reliable picture of overall demand than surveying a small, homogenous group.

The other ideas aren’t the main drivers of reliability. The interviewer’s skill can affect data quality in practice, but reliability of results is primarily about the size of the sample and how well it represents the population. The color of survey forms is unrelated to reliability, and reliability is indeed important in market research.