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Measures of Central Tendency
There are two branches of an examination employing 100 and 80 person respectively. If the arithmetic mean of the monthly salaries by two branches are Rs. 275 and Rs. 225 respectively. Find out the arithmetic mean of the salaries of the employees of the establishment as a whole.
Combined Mean
= (275 X 100) + (225 X 80)
100 + 80
= 27500 + 18000 = 45500
180 1800
= Rs. 252.8.
Sponsor Area
The size of land holdings of 380 families in a village is given below. Find the median size of land holdings.
|
Size of Land Holdings (in acres) |
Number of families |
|
less than 100 100-200 200-300 300-400 400 and above |
40 89 148 64 39 |
What do you mean by 'Average'?
Pocket expenditures of 6 students are (Rs.) 6,12,18,24,30 and 36 respectively. Find out arithmetic mean.
Name various kinds of statistical averages?
Give formula of weighted averages.
Give formula of calculating arithmetic average of a continuous series.
What is arithmetic mean?
Define median.
Define mode.
Give formula for finding out median.
Sponsor Area
Sponsor Area