Calculate arithmetic mean of the following distribution by Direct Method:
|
X |
Y |
|
1 2 3 4 5 6 7 8 |
5 15 25 35 10 5 3 2 |
|
Total |
100 |
Calcuation of Arithmetic Mean:
|
X |
f |
fx |
|
1 2 3 4 5 6 7 8 |
5 15 25 35 10 5 3 2 |
5 30 75 140 50 30 21 16 |
|
Σ f = 100 |
Σ fx = 367 |
The following table gives production yield in kg. per hectare of wheat of 150 arms in a village. Calculate the mean, median and mode production yield.
|
Production yield (kg. per hectare) |
50-53 |
53-56 |
56-59 |
59-62 |
62-65 |
65-68 |
68-71 |
71-74 |
74-77 |
|
Number of farms |
3 |
8 |
14 |
30 |
36 |
28 |
16 |
10 |
5 |
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.
Mock Test Series
