Name:________________________________________
CP Pre-Algebra
Date:_________________________________________
Unit 1 Quiz 1 Review
1.
Create a data set that consists of 5 numbers and has the following properties:
Median: 24
Mode: 18
Mean: 23
_______
2.
________
________
________
________
The distance, in feet, of each throw Steve made in the javelin is listed below:
110
118
124
130
140
194
What is Steve’s mean throw?
________
Steve threw the javelin once more. The mean of his throws stayed the same. What was his last throw? __________
3.
A back-to-back stem-and-leaf plot was created to show how many minutes students said that they spent studying for
Mrs. Kelley’s Science Test last night. The results of her 3rd and 4th period classes are show below.
Find the mode of Period 4:
____________
Find the median of Period 3:
____________
Find the median of Period 4:
____________
Period 3
Period 4
7
2
Find the difference in the median of each period.
7
____________
4.
Examine the two dot plots below. Find the mean, range, and the mean absolute deviation for each dot plot. Then,
determine which dot plot has more variability. Explain how you know. Use data points to justify your answer.
Number of points scored by players on the basketball team
Range:________
Range:________
Mean:________
Mean:________
MAD:_________
MAD:________
Which dot plot has more variability? Explain using data points.
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5.
Heights of Seventh Grade Students
Fifty seventh grade students were asked how tall they were. Their heights were recorded in the histogram above. Use the
histogram to answer the following questions:
a.) What percentage of students were between 55 and 64 inches tall? ___________
b.) What percentage of students were between 70-74 inches tall? ___________
c.) What percentage of students were less than 55 inches tall? _____________
6. Create a box-and-whisker plot for the following data set, and list all of the important data points on the blanks below:
23 36 18 12 25 30 18 26 31 20
Minimum:________
Maximum:________
Median:________
Lower Quartile:________
Upper Quartile:________
Interquartile Range: ________
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
7. Analyze the two box-and-whisker plots below. Which box-and-whisker plot has more variability? How do
you know? Use data points to justify your answer.
Number of TVs in My
House
Ages of My Younger Siblings
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8. Create a data set that consists of 5 numbers, and has the following properties:
Median: 54
_______
9.
Mode: 59
________
________
Mean: 55
________
________
If Winston’s first five test scores were: 88, 92, 90, 83, 97, what score would he have to get on his 6 th test to
keep both his mean and median scores the same?
6th test score:____________
10. Find the Mean and the Mean Absolute Deviation for the data set below:
10
14
26
15
25
10
18
12
21
19
Mean:__________
MAD:__________