Question

UESTION 2 0 Mdpant

Please help so difficult

Answer 1

Solution :

The age of fifty factory wokers are given. We have to contruct a grouped frequency distribution using 7 classes. The frequency distribution is shown in an excel sheet.

Ages:50,63,42,28,30,37,29,61,43,43,27,50,28,28,50,62,34,53,21,32,19,41,60,57,22,35,46,32,30,25,36,52,57,29,35, 42,57,35,61,46,21,49,26,40,19,18,25,23,47,29.

Maximum : 63 years ; Minimum : 18 years

Range: Maximum - Minimum = 63 - 18 = 45 years..............(Ans)

Class Width : 6.............(Ans)

The Grouped Frequency Distribution for the data with 7 classes is given below :

Class Limits Class Boundaries Mid-point Frequency(f) cf (less than) cf (greater than) Relative Freq.(r) crf(less than) 17-23 24-30 31-37 16.5-23.5 23.5-30.5 30.5-37.5 37.5-44.5 44.5-51.5 51.5-58.5 58.5-65.5 20 50 43 31 23 17 10 0.14 0.24 0.16 0.12 0.14 0.14 0.38 0.54 0.66 0.8 0.9 19 27 12 34. 41 48 45-51 52-58 59-65 45 62 50 Total 50

Note: The numbers are quite blurred. Somehow, I have managed to figure them out.