Chapter 10.4, Problem 26MC

Mathematical Connections

Following are raw test scores from a history test:

$86$ $85$ $87$ $96$ $55$

$90$ $94$ $82$ $68$ $77$

$88$ $89$ $85$ $74$ $90$

$72$ $80$ $76$ $88$ $73$

$64$ $79$ $73$ $85$ $93$

a. Construct an ordered stem and leaf plot for the given data.

b. Construct a grouped frequency table for these scores with intervals of $5$ starting the first class at $55$.

c. Draw a histogram of the data.

d. If a circle graph of the grouped data in (b) were drawn, how many degrees would be in the section representing the $85$ through $89$ interval?