Free IMSA Statistical Analysis Questions and Answers

Question 1

What is the mean of the following set of numbers: 4, 8, 15, 16, 23, 42?

Accepted Answer

19

Answer

The mean is calculated by adding all the numbers and dividing by the count: (4 + 8 + 15 + 16 + 23 + 42) / 6 = 19.

Question 2

What is the median of the following set of numbers: 7, 3, 9, 12, 15?

Accepted Answer

9

Answer

The median is the middle number when the data set is ordered: 3, 7, 9, 12, 15. The middle number is 9.

Question 3

Which of the following measures of central tendency is most affected by outliers?

Accepted Answer

Mean

Answer

The mean is most affected by outliers because it takes into account all values, while the median and mode are less affected.

Question 4

What is the mode of the following set of numbers: 2, 4, 4, 4, 6, 7, 8, 9?

Accepted Answer

4

Answer

The mode is the number that appears most frequently in the data set, which is 4 in this case.

Question 5

Which of the following is a measure of variability?

Accepted Answer

Standard Deviation

Answer

Standard deviation is a measure of the amount of variation or dispersion in a set of values.

IMSA - Intermediate Math Skill Assesment Practice Test