The following data are test grades for a university business statistics class. $$\begin{array} { | l | l | l | r | r | r | r | r | r | r | }
\hline 63 & 74 & 42 & 65 & 51 & 54 & 36 & 56 & 68 & 57 \
\hline 62 & 64 & 76 & 67 & 79 & 61 & 81 & 77 & 59 & 38 \
\hline 84 & 68 & 71 & 94 & 71 & 86 & 69 & 75 & 91 & 55 \
\hline 48 & 82 & 83 & 54 & 79 & 62 & 68 & 58 & 41 & 47 \
\hline
\end{array}$$ a. Construct a cumulative frequency distribution and a cumulative relative frequency distribution for the data.
b. What proportion of the grades is less than 60?
c. What proportion of the grades is more than 70?

Question

The following data are test grades for a university business statistics class. $$\begin{array} { | l | l | l | r | r | r | r | r | r | r | } 
\hline 63 & 74 & 42 & 65 & 51 & 54 & 36 & 56 & 68 & 57 \
\hline 62 & 64 & 76 & 67 & 79 & 61 & 81 & 77 & 59 & 38 \
\hline 84 & 68 & 71 & 94 & 71 & 86 & 69 & 75 & 91 & 55 \
\hline 48 & 82 & 83 & 54 & 79 & 62 & 68 & 58 & 41 & 47 \
\hline
\end{array}$$ a. Construct a cumulative frequency distribution and a cumulative relative frequency distribution for the data.
b. What proportion of the grades is less than 60?
c. What proportion of the grades is more than 70?

Quizplus · Accepted Answer

The Answer of The following data are test grades for a university business statistics class. $$\begin{array} { | l | l | l | r | r | r | r | r | r | r | } 
\hline 63 & 74 & 42 & 65 & 51 & 54 & 36 & 56 & 68 & 57 \
\hline 62 & 64 & 76 & 67 & 79 & 61 & 81 & 77 & 59 & 38 \
\hline 84 & 68 & 71 & 94 & 71 & 86 & 69 & 75 & 91 & 55 \
\hline 48 & 82 & 83 & 54 & 79 & 62 & 68 & 58 & 41 & 47 \
\hline
\end{array}$$ a. Construct a cumulative frequency distribution and a cumulative relative frequency distribution for the data.
b. What proportion of the grades is less than 60?
c. What proportion of the grades is more than 70?

The Following Data Are Test Grades for a University Business