Quiz 2 Review—Data Display
Name: __________________________
Vocabulary—Use your notes to find the exact answer that fits each blank.
Date:________________
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 final digit is called the ____________________.
3. The class width can be found by subtracting the ______________________ from the __________________ and
dividing by the total number of __________________________.
4. A histogram’s shape is skewed right if the ______________ of the curve is on the right.
5. A ____________________________ are the values which determine the upper and lower limits of a class.
6. A(n) _________________________ is clearly separated from the main body of observations.
7. Data that is presented in its original form before organization is ________________________.
8. If a histogram’s shape looks similar to a normal curve it is classified as __________________________.
9. The smallest data value that can be included in the class is _________________________________.
10. A(n) __________________ is a graphical display of categorical data using bars of different heights.
11. The three columns of a grouped frequency distributions are __________________, _________________, and
______________________.
12. If a histogram’s shape has two defined peaks then it is said to be _________________________.
13. In a dot plot, the _____________________ of the variables is represented by the dots.
14. A Pareto Chart is a type of bar graph in which the frequencies are arranged from _____________________ to
_____________________.
15. The overall pattern of a distribution is determined by these three descriptions: _________________,
______________, and __________________________.
16. If there are two middle values, then the median is the _____________ of those two values.
17. The 3rd rule for grouped data is that the data must be ______________________________, which means the class
limits cannot overlap or be contained in more than one class.
18. If the tail of a histogram’s distribution is to the left, then the shape is said to be ____________________________.
Work Problems—On a separate sheet of paper answer each question fully.
19. The heights of 20 basketball players, in inches, are given below.
a) Make a dot plot.
b) What is the spread of the data? Describe the distribution fully.
68, 70, 70, 71, 75, 80, 81, 82, 84, 75
75, 80, 75, 77, 75, 80, 83, 80, 71, 70
20. A particular company was recording the age of all of their workers. Using the recorded ages, make a stem-and-leaf
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
21. 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 shape of the distribution.
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
22. The ages of 22 students in a karate class are given below.
a) Construct a dot plot.
b) What is the spread (range) of the data? Describe the distribution fully.
11, 5, 9, 13, 8, 9, 9, 11, 10, 8, 6, 7, 12, 11, 13, 12, 7, 6, 11, 12, 10, 8
23. 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
32
85
125
46
62
24. The daily temperatures of the month of February were recorded. Using the recorded temperatures, make a stemand-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
25. This data set gives pulse rates, in beats per minute, for a group of 30 students.
a) Make a dot plot.
b) What is the spread of the data? Describe the 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
26. The following is a list of prices of items sold at a garage sale. Construct a frequency distribution using 7 classes. Draw
a histogram. Describe the shape of the distribution
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
27. 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
28. 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 shape of the distribution.
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