Question

the average heights of four samples taken from a population of students are shown in the table. which of these is most likely closest to the average height of the population?
sample size | average height (inches)
10 | 61
20 | 52
30 | 55
40 | 57
a. 61
b. 55
c. 57
d. 52

Explanation:

Step1: Recall Sampling Principle

Larger sample sizes are more representative of the population. So, the sample with the largest size (40) will have an average height closest to the population's average.

Step2: Identify the Largest Sample

The sample size of 40 has an average height of 57 inches.

Answer:

C. 57