First slide

Introduction to statistics

Question

If the range of the scores $18, 13, 14, 42, 22, 26, x$ is $44 (x > 0)$ then the sum of the digits of $x$ is

Moderate

A

16
B

14
C

12
D

cannot be determined

Solution

Clearly, $x$ is the greatest score.
We have
Range = Maximum value - Minimum value
$\Rightarrow$ 44 = Maximum Value - 13
$\Rightarrow$ Maximum value = 57
Clearly, Sum of the digits of 57 is 12.

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