Worked Example 3
Worked Example 3
TGM Original Questions
Free
A sample of 30 salesmen was surveyed and the ages of each of the salesman are given as follows:
Calculate the unbiased estimates of the population mean and variance.
| Age | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 |
|---|---|---|---|---|---|---|---|---|
| Frequency | 3 | 3 | 4 | 5 | 7 | 4 | 2 | 1 |
Video Solution:
Default solution
Answer:\(\bar{x} = 24.2\), \(s^2 = 3.41\) (3 sf)\)
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