Question

the stem and leaf plot shows the numbers of sit - ups a group of students did in p.e. number of sit - ups stem leaf 0 9 1 3 7 9 2 0 3 6 3 1 2 5 5 7 4 4 6 7 7 5 0 3 6 2 2 7 6 8 9 0 2 6|2 means 62. what is the difference between the number of students who did more than 36 sit - ups and the number of students who did fewer than 25 sit - ups? a 6 b 11

Explanation:

Step1: Count students with more than 36 sit - ups

Count the number of data points in the stem - and - leaf plot for values greater than 36. The values are: 37, 44, 46, 47, 47, 50, 53, 62, 62, 76, 90, 92. There are 12 students.

Step2: Count students with fewer than 25 sit - ups

Count the number of data points in the stem - and - leaf plot for values less than 25. The values are: 9, 13, 17, 19, 20, 23. There are 6 students.

Step3: Calculate the difference

Subtract the number of students with fewer than 25 sit - ups from the number of students with more than 36 sit - ups. $12 - 6=6$.

Answer:

A. 6