Solve this :
22. The following frequency distribution shows the daily savings of 64 children in a locality :
Daily savings (in Rs)
1 - 3
3 - 5
5 - 7
7 - 9
9 - 11
11 - 13
13 - 15
Number of children
7
6
x
13
y
5
4
Answers
Answer:
The value of x is 9 and y is 20
Step-by-step explanation:
The following frequency distribution shows the daily savings of 64 children in a locality. the mean saving is ₹8
1-3 2 7 14
3-5 4 6 24
5-7 6 x 6x
7-9 8 13 104
9-11 10 y 10y
11-13 12 5 60
13-15 14 4 56
Where, mean = 8 , and
Now we have two equation of x and y to solve for x and y using elimination method.
Thus, The value of x is 9 and y is 20