How will you calculate correct arithmetic mean from incorrect arithmetic mean due to writing incorrect value.
Steps involved in calculating correct A.M. from incorrect A.M. due to writing incorrect value:
1. Multiply incorrect arithmetic mean by X i.e. 
x N.
2. Subtract incorrect value and add correct value to 
x N.
3. Divide the resultant by N and get the correct arithmetic mean.
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.
Mock Test Series
