Question

Table 1. The number of hours per week play online games. Hours Number of students 10 to 14 2 15 to 19 12 20 to 24 23 25 to 29 60 30 to 34 77 35 to 39 38 40 to 44 8

          Table 1. The number of hours per week play online games.
Hours Number of students
10 to 14
2
15 to 19
12
20 to 24
23
25 to 29
60
30 to 34
77
35 to 39
38
40 to 44
8

Added by Clara D.

Computer Science and Information Technology

Trishna Knowledge Systems 2018 Edition

Instant Answer

Solved by Expert Shelayah Robinson

Step 1

The midpoint of an interval can be calculated by taking the average of the lower and upper limits of the interval. For example, the midpoint of the interval 10 to 14 is (10 + 14) / 2 = 12. Midpoints: 10 to 14: 12 15 to 19: 17 20 to 24: 22 25 to 29: 27 30 to 34: Show more…

Show all steps

Thanks for your feedback!

220 students were asked about the number of hours per week they play online games. The results of the survey are represented in Table 1 below. Calculate the mean and standard deviation of hours spent playing by the 220 students. Then, show the normal and abnormal number of watching hours. Table 1: The number of hours per week playing online games Hours Number of students 10 to 14 2 15 to 19 12 20 to 24 23 25 to 29 60 30 to 34 77 35 to 39 38 40 to 44 8