A sample of 15 and 25 was selected from 15, 25, 30, 35 and 45. The sampling error of the group is.

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Solution

The correct option is C 10
Average age of the population:
$A_{p}$ = $\frac{15 + 25 + 30 + 35 + 45}{5}$ =30
Average age of the sample:
$A_{s}$ = $\frac{15 + 25}{2}$ = 20
Sampling error = $A_{p}$ - $A_{s}$
= 30 - 20 = 10

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A sample of 15 and 25 was selected from 15, 25, 30, 35 and 45. The sampling error of the group is.

The correct option is C 10Average age of the population: Ap = 15+25+30+35+455=30 Average age of the sample: As= 15+252 = 20 Sampling error = Ap - As = 30 - 20 = 10

The correct option is C 10
Average age of the population:
$A_{p}$ = $\frac{15 + 25 + 30 + 35 + 45}{5}$ =30
Average age of the sample:
$A_{s}$ = $\frac{15 + 25}{2}$ = 20
Sampling error = $A_{p}$ - $A_{s}$
= 30 - 20 = 10