Mathematics
Calculate mean, median and mode of the following distribution :
| Marks | Frequency |
|---|---|
| 3 | 3 |
| 4 | 5 |
| 5 | 8 |
| 6 | 7 |
| 7 | 9 |
| 8 | 4 |
| 9 | 3 |
| 10 | 1 |
Related Questions
From a point, 36 m above the surface of a lake, the angle of elevation of a bird is observed to be 30° and the angle of depression of its image in the water of the lake is observed to be 60°. Find the actual height of the bird above the surface of the lake.
Calculate the mean mark in the distribution given below :
Marks Frequency 1 - 10 7 11 - 20 9 21 - 30 15 31 - 40 8 41 - 50 6 51 - 60 5 Also state :
(i) the median class
(ii) the modal class
By drawing an ogive; estimate the median for the following frequency distribution :
Weight (kg) No. of boys 10 - 15 11 15 - 20 25 20 - 25 12 25 - 30 5 30 - 35 2 Estimate the median for the given data by drawing ogive :
Class Frequency 0 - 10 4 10 - 20 9 20 - 30 15 30 - 40 14 40 - 50 8