College

Imagine that you created a histogram to represent final grades in your statistics class based on this grouped frequency table:

\[
\begin{tabular}{|l|l|}
\hline
Grade & Frequency \\
\hline
[tex]$90-99.99$[/tex] & 5 \\
\hline
[tex]$80-89.99$[/tex] & 10 \\
\hline
[tex]$70-79.99$[/tex] & 8 \\
\hline
[tex]$60-69.99$[/tex] & 4 \\
\hline
[tex]$50-59.99$[/tex] & 2 \\
\hline
\end{tabular}
\]

What would be the midpoint for the first interval?

A. 90
B. 99.9
C. 95
D. 93.5