TCAP Data Analysis 4

Question 1

A data set is: 2, 4, 4, 6, 8, 8, 8, 10. What is the mean?

Accepted Answer

6.25

Answer

Sum = 2+4+4+6+8+8+8+10 = 50; mean = 50 ÷ 8 = 6.25.

Question 2

A student records daily temperatures for a week: 72, 75, 68, 80, 77, 73, 71. Which value is an outlier?

Accepted Answer

There is no outlier

Answer

All values fall within a reasonable range (68–80), so no single value is extreme enough to be an outlier.

Question 3

A spinner is spun 50 times and lands on red 20 times. What is the experimental probability of landing on red?

Accepted Answer

2/5

Answer

Experimental probability = 20/50 = 2/5.

Question 4

Which type of graph is most appropriate for displaying change in temperature over a 24-hour period?

Accepted Answer

Line graph

Answer

A line graph is best for showing continuous change over time.

Question 5

A class collected data on shoe sizes: 5, 6, 6, 7, 7, 7, 8, 8, 9. What is the median shoe size?

Accepted Answer

7

Answer

With 9 values, the median is the 5th value; counting the ordered list gives 7.

(TCAP) Tennessee Comprehensive Assessment Program Practice Test