Question

The test scores for the students in Mr. Miller’s math class are shown here.

$52,61,69,76,82,84,85,90,94$.

What is the range of the test scores?

• A. $82.0$
• B. $77.0$
• C. $42.0$
• D. $22.5$

Answer 1

The correct option is C

$42.0$

Explanation of correct option:

Range of the data is the spread of given data from highest to the lowest term of the data.

Range is determined by $\mathrm{Range}=u-l$. where $u$ is the highest term and $l$ is the lowest term.

Arrange the given data in increasing order.

$52,61,69,76,82,84,85,90,94$

Here highest term $u=94$ and lowest term $l=52$.

Substitute $u=94$ and $l=52$ in $\mathrm{Range}=u-l$.

$\begin{array}{rcl}\mathrm{Range}& =& 94-52\\ \therefore \mathrm{Range}& =& 42\end{array}$

Hence, option (C) is correct option.