Question

Canvas → X COD Using the table, what was the mean number of workout sessions completed? No. of workout sessions per month F % Σ% 1-3 64 34.6 34,6 4-6 43 23.2 57.8 7-9 24 13.0 70.8 10-12 18 9.7 80.5 13-17 16 8.6 89.1 18-22 13 96.2 7.1 23-28 7 3.8 100.00 Note. Median 5 Mode-2 M=3.8 38 2.1 Unable to calculate with information provided 0 42 uslan 4 lige

Answer 1

Q1) MEAN

This is grouped frequency. To calculate the mean we need the 'x' : classmark

x = (upper l + lower L )/ 2

Workouts
lower L	Upper L	x	F	xf
1	3	2	64	128
4	6	5	43	215
7	9	8	24	192
10	12	11	18	198
13	17	15	16	240
18	22	20	13	260
23	28	25.5	7	178.5
Total			185	1411.5

Mean =

ΣΤf Σf

Mean = 7.62

But here there has been an error since mean is shown as 3.8

ans: 3.8

Q2)

To know the number of particpants we simply look at the frequenc y 'F" column of the required class.

18 - 22: F = 13

Ans: 13