Stats Worksheet IIe Name:
MA 202
Spring Semester 2004
WARNING: You must SHOW ALL OF YOUR WORK. You will receive NO CREDIT
if you do not show your work.
DUE: THURSDAY, 19 FEBRUARY 2004
1. A Spanish 101 exam was given last Monday. The scores for Section 005 are given
below.
72, 99, 99, 53, 89, 70,
82, 80, 72, 91, 89, 51,
67, 94, 30, 55, 90, 74,
56, 65, 90
(a) Draw a line plot to represent these scores.
(b) Draw a stem and leaf plot to represent these scores.
(c) Draw a histogram to represent these scores. You should label the horizontal axis
with 0โ9, 10โ19, 20โ29, 30โ39, 40โ49, 50โ59, 60โ69, 70โ79, 80โ89, and 90โ100.
(d) What is the total area of all the columns in the histogram? How does this relate
to your data?
(e) Draw a line graph to represent these scores. You should label the horizontal axis
with 0โ9, 10โ19, 20โ29, 30โ39, 40โ49, 50โ59, 60โ69, 70โ79, 80โ89, and 90โ100.
(f) Use your histogram to find the total area under the line graph and above the
horizontal axis. HINT:You will probably need to draw a large histogram on a full
sheet of paper and use a pair of scissors.
(g) Draw a bar graph to represent the grades on this exam. The grades are calculated
as follows:
GRADE SCORE
A 90-100
B 80-89
C 70-79
D 60-69
E 0-59
(h) Draw a pie chart to represent the grades on this exam. Be sure to indicate the
angles you used to construct the chart.
(i) Calculate the mean score.
(j) Calculate the median score.
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