Histograms – Mixed Practice
Name:
1) The test scores for a class of 20 students are as follows: 93, 84, 97, 98, 100, 78, 86, 100, 78, 86, 100,
85, 92, 72, 55, 91, 90, 75, 94, 83, 60, 81, 95.
a) Complete the frequency table below.
Test Scores
Tally
Frequency
91-100
b) Find the modal interval.
81-90
71-80
61-70
c) Find the interval that contains the median.
51-60
2) The scores of the teams in a local bowling league are listed in the chart below.
Teams
Aces
186
224
216
207
Bees
177
207
235
223
Cubs
199
212
188
239
Darts
197
196
226
205
Experts
193
214
231
200
A. Create the frequency table and cumulative frequency table for the bowling scores.
Interval
Tally
Frequency
Interval
Cumulative
Frequency
170-184
185-199
200-214
215-229
230-244
B. What is the mean, median, mode, and range of the 20 bowling scores listed?
mean = ___________ median = _______________mode = ____________ range = ____________
C. Find the median interval = _______________ and the modal interval(s) = ________________
D. Construct a histogram and cumulative histogram using the data in the tables from the previous
page
Label, Label, Label! Make sure you skip a box if your data does not start with a 0.
Histogram
Cumulative Histogram
3) For what value of x will 8 and x have the same mean (average) as 27 and 5?
4) A jar contains 5 blue marbles, 3 red marbles, and 4 green marbles. You reach in and pick one marble
from the jar, keep it, and then pick another marble. Find the following probabilities:
a. P(blue, blue):
b. P(red, red):
c. P(red, green):
d. P(not red, not red):
5) Solve for x:
x 1 x

(Hint: product of means = product of extremes) Check your answer.
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