Dr. Campbell uses an Internet form to gather standardization information for a n

Question

Dr. Campbell uses an Internet form to gather standardization information for a new intelligence test. He wants data for people in an area with over a million residents. This area has few computers and little Internet access. He uses online advertising to direct residents to his test. After persistent efforts, he is able to obtain data for 1,000 residents. He is able to verify reliably that the participants are residents of his area of interest. What would you say about this dataset?

a. The size of the dataset is adequate so this can be considered a representative sample.

b. If the demographics (ethnicity, gender, age) are similar to the area's population demographics, then this can be considered a representative sample.

c. If he obtained a larger sample (i.e., 10,000 people) then the sample could be considered representative.

d. This would not be considered a representative sample, even if it were larger or consistent with population demographics

Explanation / Answer

Answer. b. If the demographics ( ethnicity, gender,age)are similar to the area's population demographics, then it can be considered as a representative sample.

Representative Sample is a sample that closely matches all the characteristics of it's population as a whole.It should be able to represent all the wide spectrum of the characteristics of the population.

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