Question

Who has the best conclusion?A.Sheryl said the lowest grade was a 70 and the highest grade was a 92.B.Shania said the highest grade was a 100.C.Andrea said the lowest grade was a 68 and the highest grade was a 92.D.Allen said the range of the scores was 32.

Answer 1

Step 1

We will consider all the options

Option A

$\text{The lowest grade is 68 and the highest grade is 100}$

Hence, option A is wrong. Sheryl is not right,

Step 2

Option C

$\text{The lowest grade is 68 and the highest grade is 100}$

Hence option C is wrong too.

Step 3

Option D

$\begin{gathered} \text{Range}=\text{highest grade - lowest grade} \\ \text{Highest grade=100} \\ \text{lowest grade=68} \\ \text{Range}=100-68=32 \end{gathered}$

Step 4

Option B

$\text{The highest grade is a 100}$

Answer;

$\begin{gathered} \text{Shania was right by saying the highest grade was a 100} \\ \text{Allen was also right by saying the range of the scores is 32} \\ \text{However},\text{ we go with Option B} \end{gathered}$