17. Complete mean of the grouped data:
Monthly salary
No. of persons
325.5 - 350.5
350.5 - 375.5
375.5 - 400.5
400.5 - 425.5
425.5 - 450.5
450.5 - 475.5
475.5 - 500.5
20
10
10
5
1
2
2
Answers
Given : Monthly salary Range and No. of persons
To Find : Complete mean of the grouped data:
Solution:
Monthly salary Mid Value f A=(mid value - 388)/25 A*f
325.5 - 350.5 338 20 -2 -40
350.5 - 375.5 363 10 -1 -10
375.5 - 400.5 388 10 0 0
400.5 - 425.5 413 5 1 5
425.5 - 450.5 438 1 2 3
450.5 - 475.5 463 2 3 6
475.5 - 500.5 488 2 4 8
50 -28
Mean = 388 + 25 * ( - 28) / 50
= 388 - 14
= 374
mean of the grouped data: = 374
Learn More:
mean of a raw data is more accurate than the mean of a grouped ...
https://brainly.in/question/16918428
mean of the sampling distribution = 200
https://brainly.in/question/15111066