Mathematics
In a book of 300 pages, the distribution of misprints is shown below :
| Number of misprints per page | Number of pages |
|---|---|
| 0 | 154 |
| 1 | 95 |
| 2 | 36 |
| 3 | 7 |
| 4 | 6 |
| 5 | 2 |
Find the average number of misprints per page.
Related Questions
The ages of 40 students of a group are given below :
Age (in years) Number of students 12 6 13 8 14 5 15 7 16 9 17 5 Find the mean age of the group.
Find the mean of the following frequency distribution :
Variate frequency 5 7 6 8 7 14 8 11 9 10 The following table gives the wages of different categories of workers in a factory :
Category Wages in ₹/day Number of workers A 250 2 B 300 4 C 350 8 D 400 12 E 450 10 F 500 6 G 550 8 (i) Calculate the mean wage.
(ii) If the number of workers in each category is doubled, what would be the new mean wage?If the mean of the following distribution is 7.5, find the missing frequency f :
Variable Frequency 5 20 6 17 7 f 8 10 9 8 10 6 11 7 12 6