Mathematics
Find the arithmetic mean (correct to nearest whole number) by using step deviation method.
| x | f |
|---|---|
| 5 | 20 |
| 10 | 43 |
| 15 | 75 |
| 20 | 67 |
| 25 | 72 |
| 30 | 45 |
| 35 | 39 |
| 40 | 9 |
| 45 | 8 |
| 50 | 6 |
Related Questions
If the mean of the following distribution is 3, find the value of p.
x f 1 9 2 6 3 9 5 3 p + 4 6 In the following table, Σf = 200 and mean = 73. Find the missing frequencies f1 and f2.
x f 0 46 50 f1 100 f2 150 25 200 10 250 5 Find the mean (correct to one place of decimal) by using short-cut method.
x f 40 14 41 28 43 38 45 50 46 40 49 20 50 10 The mean of given observations is :
C.I. f 30-40 2 40-50 3 41
27
71
91