Math 7 /Unit 7 Practice Test: Collecting, Displaying and Analyzing Data
Name
Date
Definitions (1-4)
1. Mode
2. Range
3. Median
4. Mean
5. Which data display would be used to compare frequencies of ages of students enrolled in a soccer club? The students will fall into equal intervals.
A) box-and-whisker plot
B) histogram
C) line plot
D) stem-and-leaf plot
6. Which data display would be used to show the temperature recorded each hour in a day?
A) box-and-whisker plot
B) circle graph
C) line graph
D) stem-and-leaf plot
7. The stem-and-leaf plot below shows the scores of 25 students on a 50 point project. Which score is most likely an outlier?
A) 11
B) 39
C) 40
D) 50
8. A news magazine asked 1,000 people to judge the Governor’s performance in office as poor, fair, good or excellent. The results are displayed in the graph. How many people in the pool rated the Governor’s performance as good or excellent?
A) 140
B) 250
C) 390
D) 500
9. The Smith Family has the following budget:
Housing 40%
Food 25%
Utilities 20%
Clothing 10%
Other 5%
Which circle graph best represents this data?
10. Use the information given in problem #9 above. If the Smith’s earn $4,000 a month, how much do they spend on utilities each month?
11. The table below shows the number of boys and the number of girls in seventh grade at a school in the years 1990, 1995, 2000, and 2005.
Create a double bar graph below to show the information in the table.
12. Use the circle graph TV News Viewership given on the right. Find the mode.
13. Using the stem-and-leaf to the right, find the median and the range.
Use the scatter plot Grades and TV Watching for problems #14 and #15.
14. Write “positive correlation”, “negative correlation”, or “no correlation” to describe the relationship. Explain.
______
15. Based on the data in the scatter plot, what conclusion can you make about the relationship between grades and TV viewing?
______
16. The average class size for 15 schools is given. Make a cumulative frequency table for the data.
Use this figure for questions #17 and #18.
17. a) What is the median?
b) What is the lower extreme (least value)?
c) What is the upper quartile?
d) What is the range of the data?
18. a) What percent of the data lies in the box?
b) What is the interquartile range?
c) Describe the spread of the data around the median. ______
______
______
______
______
19. Explain why the graph Candy Preference is misleading.
20. Which circle graph is the best representation of the information in the given bar graph?
Math 7 Practice Test Unit7: Collecting, Displaying, and Analyzing Data Page 4 of 6