FINAL REVIEW Ch 10 - Data Analysis #1
9th Grade Algebra 1A / Algebra 1 Beta (Ms. Dalton)
Student Name/ID:
Instructor Note:
SHOW ALL WORK!
1. Draw the line plot for these numbers.
,
,
,
,
,
,
,
,
,
,
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2.
Here are the scores for 17 students on a biology test.
92, 88, 93, 86, 77, 72, 82, 75, 89, 76, 78, 73, 85, 70, 90, 80, 71.
Draw the histogram for these data.
3. A local real estate company has real estate agents. The number of houses that each agent sold last
year is shown in the bar graph below. Use this bar graph to answer the questions.
(a) Which agent sold the most houses? How many houses did that agent sell?
(b) How many more houses did Maria sell than Ari?
(c) How many agents sold fewer than
houses?
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4. The graph below shows the numbers of orders received by a company for five months.
(a) What was the least number of orders in a month?
(b) When did the number of orders have the greatest increase?
5. Each person in a community was asked, "What is your favorite type of pet?" The circle graph below
summarizes their answers.
(a) Which category was chosen by approximately one-fourth of the community?
(b) Approximately what percentage of the community chose Other or Cat?
__ 10% __ 30% __ 50% __ 70%
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6. The stem-and-leaf plot below gives the gas mileages (in miles per gallon) for
answer the questions that follow.
new cars. Use the plot to
Gas mileage (miles per gallon)
Key:
means a gas mileage of
(a) What is the lowest gas mileage in the
s?
(b) How many cars have a gas mileage in the
s?
(c) What is the highest gas mileage overall?
7. The stem-and-leaf plot below shows the amounts of time (in minutes) customers parked their cars in a
times from weekdays and
from weekends. Use the plot to answer the
parking garage. There were
questions.
Amount of time parking (in minutes)
Weekdays
Weekends
(a) What were the ranges of the parking times for the two groups?
(b) Which group had the greater median parking time?
s?
(c) Which group had more times in the
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8.
Here are the scores of
students on a science test.
63, 67, 67, 74, 74, 79, 82, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95.
Notice that the scores are ordered from least to greatest.
Make a box-and-whisker plot for the data.
9. Two geometry classes with the same number of students took a final exam.
The box-and-whisker plots below summarize the test scores for each class.
Use the box-and-whisker plots to answer the questions.
Which class had a higher median test score?
Class A
Class B
Both classes had the same
Which class had a smaller range of test scores?
Class A
Class B
Both classes had the same
Which class had the highest test score?
Class A
Class B
Both classes had the same
Class A
Which class had test scores with a larger interquartile range (IQR)? Class B
Both classes had the same
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10. Eight adults were asked how many different jobs they have had. Their answers are listed below.
Find the mode and the range for the data.
11. A pet store has
cats. Here are their weights (in pounds).
Find the mean weight of these cats.
If necessary, round your answer to the nearest tenth.
12. Each of
students reported the number of movies they saw in the past year. This is what they reported:
12, 14, 11, 9, 9, 4.
Find the median and mean number of movies that the students saw.
If necessary, round your answers to the nearest tenth.
13. A movie club surveyed
high school students. The students were asked how often they go to the
movies and whether they prefer action movies or dramas. Their responses are summarized in the
following table.
Twice a month
or less
Three times a month
or more
Action
Drama
(a) What percentage of the students go to the movies three times a month or more?
(b) What percentage of the students prefer dramas ?
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14. A sample of
adults is selected. The adults are classified according to their voter registration status
and their preferred source of current events information. The results are given in the contingency table
below.
Preferred source of information
Television Newspapers Radio Internet sites
Voting registration status
Registered
27
27
15
29
Not registered
46
48
33
37
What is the relative frequency of adults in the sample who prefer to obtain their information through
television?
Round your answer to at least two decimal places.
15. Nine people were asked, "How many times have you been on an airplane?" Their responses are listed
below.
Find the range and the mode for the data.
16. A group of
responses:
students was asked, "How many hours did you watch television last week?" Here are their
6, 18, 19, 19, 15, 7, 18, 19.
Find the mean and median number of hours for these students.
If necessary, round your answers to the nearest tenth.
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17. The weekly salaries (in dollars) for employees of a small business are given below. (Note that these
are already ordered from least to greatest.)
279, 623, 654, 677, 735, 805, 866, 921.
Suppose that the
salary changes to
Answer the following.
18. Answer the questions below.
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19. The following are the ages of
,
,
,
,
,
mathematics teachers in a school district.
,
,
,
,
,
,
Notice that the ages are ordered from least to greatest.
Give the five-number summary and the interquartile range for the data set.
Five-number summary
Minimum:
Lower quartile:
Median:
Upper quartile:
Maximum:
Interquartile range:
20. Here are yesterday's high temperatures (in Fahrenheit) in
,
,
,
,
,
,
,
,
,
,
,
U.S. cities.
,
Notice that the temperatures are ordered from least to greatest.
Give the five-number summary and the interquartile range for the data set.
Five-number summary
Minimum:
Lower quartile:
Median:
Upper quartile:
Maximum:
Interquartile range:
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FINAL REVIEW Ch 10 - Data Analysis #1 Answers for class 9th Grade
Algebra 1A / Algebra 1 Beta
1.
2.
3.
(a) Which agent sold the most houses?
Nadya
How many houses did that agent sell?
house(s)
(b) How many more houses did Maria sell than Ari?
more house(s)
(c) How many agents sold fewer than
houses?
agent(s)
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4. (a) What was the least number of orders in a month?
orders
(b) When did the number of orders have the greatest increase?
to
5.
6. (a) What is the lowest gas mileage in the
s?
(b) How many cars have a gas mileage in the
s?
(c) What is the highest gas mileage overall?
7. (a) What were the ranges of the parking times for the two groups?
Weekdays: 44 minutes
Weekends: 36 minutes
(b) Which group had the greater median parking time?
Weekdays
(c) Which group had more times in the
s?
Weekends
8.
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9.
Which class had a higher median test score?
Class A
Which class had a smaller range of test scores?
Class B
Which class had the highest test score?
Class A
Which class had test scores with a larger interquartile range (IQR)? Class A
10. Mode:
Range:
11.
pounds
12. Median:
Mean:
movies
movies
13. (a)
(b)
14.
15. Range:
Mode:
16. Mean:
Median:
hours
hours
17.
18.
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19. Five-number summary
Minimum:
Lower quartile:
Median:
Upper quartile:
Maximum:
Interquartile range:
20. Five-number summary
Minimum:
Lower quartile:
Median:
Upper quartile:
Maximum:
Interquartile range:
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