Question

3) Dante took a sample of AVCS students and determined the number of electives each student was taking. Here isthe data from 15 students: 2, 1, 3, 2, 1, 1, 2, 3, 4, 1, 3, 1, 2, 4, 2. Find the sample mean of Dante's data. If he tooka different sample of 15 students would their means be the same?

Answer 1

Mean of a data is expressed as the ratio of the sum of the data to the total sample size.

Mean = Sum of data/sample size

Mean = (2+ 1 + 3 + 2 + 1 + 1 + 2 + 3 + 4 + 1 + 3 + 1 + 2 + 4 + 2)/15

Mean = 32/15

Mean = 2.13

Hence the sample mean of Dante's data is 2.13