Question

Estimate the mean of the following numbers to the nearest ones place:
1, 2, 2, 3, 3

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

The correct option is B 2

$Mean=\frac{Sumoftheobservations}{Numberofobservations}$

The given numbers are 1, 2, 2, 3, 3 and the count of obervations is 5

∴ Mean of the numbers:
$=\frac{1+2+2+3+3}{5}$
$=\frac{11}{5}$

$=\frac{11\times 2}{5\times 2}$

$=\frac{22}{10}$

$=2.2$

Estimating 2.2 to the nearest ones place, we get 2.

Therefore, the mean of the given numbers estimated to ones place is 2.