# Exercises – Graphs and Descriptive Statistics - 39950

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A teacher asked each of her students how many novels they had read in the previous six months.  The results are shown below.

0          1          5          4          2          1          3          2

2          7          2          5          0          1          0          1

1          2          6          0          2          3          1          2

7          1          4          2          3          1          7          0

0          2          1          1          0          6          1          7

Construct a frequency table for the number of novels read.

2)    The frequency table shows the weights in ounces of 30 stones

Use the above information to construct a cumulative frequency table for the data.

3)    Use the following data to construct a bar chart.

Job categories

Clerical            Management   Maintenance   Professional    Unemployed

5                      4                      6                      2                      1

Create a bar graph and place the above data in a bar graph.

4)    The data below are the numbers of hours of homework done as reported by 24 high school juniors for the last week in September 2006.

6, 5, 6, 4, 6, 6, 9, 7, 6, 3, 8, 5, 5, 8, 6, 5, 8, 6, 5, 7, 5, 8, 7, 4

Create a histogram using the above data.  Use bin width (size of the bar) of 2 hours.

5)    Examine the stem and leaf plot below.  Find the original data from the stem and leaf plot.

Stem                Leaves

1                      1,8 6

2                      1,1,3,7

3                      1,3,3,8,9

4                      3,4

6)    Create a stem and leaf plot with the following data.

10, 12, 33, 25, 22, 18, 19, 31, 28, 22, 13, 15, 15, 20, 21, 35, 32

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Graphs and Descriptive Statistics

Chapter 3

1)         The following is the frequency table for the number of novels read.

 Number of novels read Frequency of novels read 0 7 1 11 2 9 3 3 4 2 5 2 6 2 7 4

2)         The following is the cumulative frequency table for 30 stones.

Weight (oz)

Number of stones

Cumulative frequency

1.2-1.6

5

5

1.7-2.1

2

5+2=7

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