A marketing firm is studying consumer preferences for winter fashions in four different months. From a population of women 18 to 21 years of age, a random sample of 100 women was selected in January. Another random sample of 100 women was selected in March. Another random sample of 100 women was selected in June. Another random sample of 100 women was selected in September. What is the number of samples?

When a research is conducted, a group of people is selected randomly or specifically depending on the nature of the research. This group of people is called the sample size. We can say that it is simply the number of individuals who are being surveyed in a research process.

So in the given question, sample size or the number of individual in each survey is 100. A total of 400 people were surveyed but the sample size remains 100 each time. So 100 would be the sample size for the research each time.

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