Study Guide and Intervention (continued) - MathnMind

13-3
Display Data in a Histogram Data from a list or from a frequency table can be
used to create a histogram.
Example
Create a histogram to represent the following scores
for a 100-point math test.
72, 84, 85, 91, 98, 90, 68, 65, 55, 71, 91, 99, 98, 59, 60, 64, 61, 68, 88, 91, 99
a. Identify the greatest and least values in the data set.
The test scores range from 55 to 99.
b. Create measurement classes of equal width.
For these data, use measurement classes from 50 to 100 with a 10-point
interval for each one.
c. Create a frequency table using d. Draw the histogram.
the measurement classes.
Score Intervals Tally Frequency
50 s 60 || 2
60 s 70 |||| | 6
70 s 80 || 2
80 s 90 ||| 3
90 s 100 |||| ||| 8
Exercises
NAME ______________________________________________ DATE ____________ PERIOD _____
Study Guide and Intervention (continued)
Histograms
Create a histogram to represent each data set.
1. Student grades on a quiz worth 30 points:
18, 19, 25, 20, 24, 23, 18, 16, 24, 25, 25, 20,
20, 20, 17, 19, 20, 23, 25, 21, 27, 29, 29, 28
2. Number of red jelly beans found in a bag
of jelly beans:
50, 48, 92, 71, 75, 67, 78, 75, 45, 89, 92,
65, 45, 67, 78, 67, 88, 59, 70, 75, 74, 72 3
Math Test Scores
10
8
6
4
2
0
50–60 60–70 70–80 80–90 90–100
10
8
Red Jelly Beans per Bag
9
6
4
2
2
4
2
0
40–50 50–60 60–70 70–80 80–90
© Glencoe/McGraw-Hill 794 Glencoe Algebra 1
Frequency
Frequency
Frequency
Scores
10
8
Scores on a 30-Point Quiz
8
6
4
2
4
4
5
3
0
16–19 19–22 22–25 25–28 28–31
Scores
Number
2
90–100