Quiz 3 Review—Data Display
Name: ____________________________________________
Vocabulary—Use your notes to find the exact answer that fits each blank.
1. The main difference between a bar graph and a histogram is that a histogram deals with _________________________
data whereas a bar graph deals with ______________________ data.
2. In a stem plot, the ones place digit is called the ____________________.
3. A dot plot displays _______________________ variables.
4. The class width can be found by subtracting the ______________________ from the __________________ and dividing by
the total number of __________________________.
5. A(n) __________________ is a graphical display of categorical data using bars of different heights.
6. A ______________________________________ is a bar graph in which the bars are arranged from highest to lowest
7. A ______________________________________ represents data that occur over a specific period of time
8. A graph made by plotting ordered pairs in a coordinate plane to show the relationship between two sets of data
is called a ______________________________
9. A correlation coefficient that falls between ±1 and ±.8 is considered ________________________________
10. Predicting within a range of given x-values is called ______________________________________________.
11. _________________________________ describes the direction and strength of any relationship.
12. A correlation coefficient that falls between ±.5 and 0 is considered ________________________________
13. The correlation coefficient is denoted by _______________.
14. A summary of a straight line relationship between two variables is called a _________________________________ line.
15. A correlation coefficient that falls between ±.8 and ±.5 is considered ________________________________
16. Predicting outside a range of given x-values is called ______________________________________________.
Work Problems—On a separate sheet of paper answer each question fully.
17. The following table shows the number of pets treated in one week at the local veterinarian clinic. Construct a
bar graph to display this information. Be sure to label properly.
Pets Treated in One Week
Dogs
17
Cats
12
Ferrets
4
Birds
5
Hamsters
8
Lizards
2
18.
A particular company was recording the age of all of their workers. Using the recorded ages, make a stem-andleaf plot. Are there any outliers? Write a brief discussion of the shape, center, and spread.
48
63
42
51
65
56
53
41
47
73
79
58
62
78
40
63
19. The amount of protein for certain sandwiches in the food court is reported here. Construct a frequency table
using 7 classes. Draw a histogram. Describe the data distribution fully.
23
30
20
27
44
26
35
20
29
25
15
18
27
19
22
12
26
34
27
35
26
43
35
14
24
12
23
40
35
38
57
22
42
24
21
27
20. The ages of 22 students in a karate class are given below. Construct a dot plot.
11, 5, 9, 13, 8, 9, 9, 11, 10, 8, 6, 7, 12, 11, 13, 12, 7, 6, 11, 12, 10, 8
21.
A survey of 350 local families asked the question, “Where are you planning to vacation this summer?”
Construct a Pareto Chart from the following results.
Area
# Vacationing
Tennessee
New York
California
Florida
Hawaii
22. The number of record low temperatures for the past 6 months is
32
85
125
46
62
Months
summarized in the table below. Create a time series plot.
Number of Record
Low Temperatures
October
November
December
January
February
March
3
4
1
0
2
3
The table shows the weight of an alligator at various times during a feeding trial.
23. Make a scatterplot in your calculator of the table and sketch it below.
24. Find the correlation coefficient, 𝑟. ____________________
25. Find the equation of the regression equation: _______________________________
26. Predict the weight of an alligator at week 62. ________ An example of: interpolation or extrapolation
27. Predict the weight of an alligator at week 13. ________ An example of: interpolation or extrapolation
28. The heights of 20 basketball players, in inches, are given below. Make a dot plot.
68, 70, 70, 71, 75, 80, 81, 82, 84, 75
75, 80, 75, 77, 75, 80, 83, 80, 71, 70
29. The daily temperatures of the month of February were recorded. Using the recorded temperatures, make a
stem-and-leaf plot. Are there any outliers? Write a brief discussion of the shape, center, and spread.
35
45
42
41
25
36
27
41
34
73
26
58
29
20
28
35
48
43
42
45
21
26
35
41
47
40
39
28
19
30. This data set gives pulse rates, in beats per minute, for a group of 30 students.
a) Make a dot plot.
b) Describe the data distribution fully.
68 60 76 68 64 80 72 76 92 68 56 72 68 60 84
72 56 88 76 80 68 80 84 64 80 72 64 68 76 72
31. The following is a list of prices of items sold at a garage sale. Construct a frequency distribution using 4 classes.
Draw a histogram. Describe the data distribution fully.
34
2
11
30
4
29
5
24
8
10
5
10
2
12
5
15
20
23
25
10
25
29
1
30
8
6
30
15
5
26
32
17
32. Using the same data, construct a pie chart.
33. Your hand span is the distance from the tip of your thumb to the tip of your little finger when your fingers are
spread. Here are hand spans, to the nearest half-centimeter, of students in one algebra class. Construct a
frequency table using 7 classes. Draw a histogram. Describe the data distribution fully.
19 18.5 20.5 21.5 18.5 17.5 22 22.5 19.5 20 21
24 18 16.5 28 19 20 20.5 24 15 17 19 18 21