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.
Measures of Central Tendency
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Answer
| Number of misprints per page (x) | Number of pages (f) | fx |
|---|---|---|
| 0 | 154 | 0 |
| 1 | 95 | 95 |
| 2 | 36 | 72 |
| 3 | 7 | 21 |
| 4 | 6 | 24 |
| 5 | 2 | 10 |
| Total | ∑ f = 300 | ∑ fx = 222 |
We know that,
n = ∑f = 300.
By formula,
Mean = = 0.74 per page.
Hence, average number of misprints per page is 0.74.
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