Answers Midterm Review
Midterm Review
Name: _____________
1. In an ungrouped frequency distribution of the average age of high school graduates, what would be the boundaries for the class of graduates who were reported to be 19 years old?
2. What is the midpoint of the class 4-8 ?
3. Greg wants to construct a frequency distribution for the religious affiliation of the employees at Tim's Hardware Store. What type of distribution would be best?
A) ungrouped B) grouped C) categorical D) cumulative
4. What is the upper class boundary of the class 12–15 ?
5. What is the lower class limit in the class 35-38 ?
6. Find the class with the most number of data values.
Page 1
7. A recent statistics exam yielded the following 25 scores. Construct a grouped frequency distribution with the class limits shown below.
61 90 79 57 63
55 83 70 62 95
90 83 41 72 85
76 82 75 94 57
72 72 46 81 93
Class Limits
41-50
51-60
61-70
71-80
81-90
91-100
Tally
Frequency
8. What does a cumulative frequency graph look like?
9. Using the ogive shown below, what is the cumulative frequency of data values less than or equal to 12 ?
40
30
20
10
0
6
10.
8
10
12
14
16
18
How many values are in the data set whose histogram is shown below ?
11. Karen is constructing a pie graph to represent the number of hours her classmates do homework each day. She found that 14 of 24 classmates did homework for three hours each day. In her pie graph, this would represent how many degrees?
12. A weatherman records the high temperature in Portland, Oregon each day for a year.
What type of graph should he use to show how the high temperature changes during the year ?
13. A time series graph is useful for what purpose?
14. What type of graph is the figure below?
15. Which of the following is the properly rounded mean for the given data?
16, 18, 13, 29, 22, 11
16. What is the median of the following set of values?
15, 18, 25, 13, 17
17. What is the midrange of the following data set?
2, 7, 6, 8, 0, 8, 14, 19, 14
18.
Name: _____________
1. In an ungrouped frequency distribution of the average age of high school graduates, what would be the boundaries for the class of graduates who were reported to be 19 years old?
2. What is the midpoint of the class 4-8 ?
3. Greg wants to construct a frequency distribution for the religious affiliation of the employees at Tim's Hardware Store. What type of distribution would be best?
A) ungrouped B) grouped C) categorical D) cumulative
4. What is the upper class boundary of the class 12–15 ?
5. What is the lower class limit in the class 35-38 ?
6. Find the class with the most number of data values.
Page 1
7. A recent statistics exam yielded the following 25 scores. Construct a grouped frequency distribution with the class limits shown below.
61 90 79 57 63
55 83 70 62 95
90 83 41 72 85
76 82 75 94 57
72 72 46 81 93
Class Limits
41-50
51-60
61-70
71-80
81-90
91-100
Tally
Frequency
8. What does a cumulative frequency graph look like?
9. Using the ogive shown below, what is the cumulative frequency of data values less than or equal to 12 ?
40
30
20
10
0
6
10.
8
10
12
14
16
18
How many values are in the data set whose histogram is shown below ?
11. Karen is constructing a pie graph to represent the number of hours her classmates do homework each day. She found that 14 of 24 classmates did homework for three hours each day. In her pie graph, this would represent how many degrees?
12. A weatherman records the high temperature in Portland, Oregon each day for a year.
What type of graph should he use to show how the high temperature changes during the year ?
13. A time series graph is useful for what purpose?
14. What type of graph is the figure below?
15. Which of the following is the properly rounded mean for the given data?
16, 18, 13, 29, 22, 11
16. What is the median of the following set of values?
15, 18, 25, 13, 17
17. What is the midrange of the following data set?
2, 7, 6, 8, 0, 8, 14, 19, 14
18.