7.9. Applications of Histograms http://www.ck12.org
The TRACE feature tells you that in the second bin, which is [70-80), there are 6 values.
To advance to the next bin, or bar, of the histogram, use the cursor and move to the right. The numbers of values for
the subsequent bins are 5, 9, 13, 10, and 3, respectively. The information obtained by using the TRACE feature will
enable you to create a frequency table and to draw the histogram on paper.
Example C
The following data represents the results of a test taken by a group of students:
95 56 70 83 59 66 88 52 50 77 69 80
54 75 68 78 51 64 55 67 74 57 73 53
Display the results in a histogram using technology and construct a frequency distribution table using a bin size of
10.
The histogram and the numbers of values for the bins are as shown below:
Now the frequency distribution table can be constructed as follows: