In a group of

500

wage-earners, the weekly wages of

4%

were under Rs.

60

and those of

15%

were under

Rs.

62

:

50

.

15%

of the workers earned Rs.

95

and over, and

5%

of them got Rs.

100

and over.

The median and quartile wages were Rs.

82

:

25

, Rs.

72

:

75

, and Rs.

90

:

50

; the fourth and sixth decile wages

were Rs.

78

:

75

and Rs.

85

:

25

respectively.

Put the above information in the form of a frequency distribution. Construct a Histogram and estimate

the mean wage of the

500

wage-earners therefrom