CK-12-Basic Probability and Statistics Concepts - A Full Course

http://www.ck12.org Chapter 7. Organizing and Displaying Data

At this point, you can use the TRACE feature to find the number of values for each bin. Just press

TRACE

and use the right arrow to move across the screen.

The numbers for the bins should be 2, 5, 17, 23, 25, 4, and 4, respectively. Notice that 2+ 5 + 17 + 23 + 25 + 4 + 4 =
80, which is the number of days for which the data exists. Since we now have the frequency for each bin, the
frequency distribution table can be created as follows:

TABLE7.17:

Bin Frequency

[ 60 − 70 ) 2

[ 70 − 80 ) 5

[ 80 − 90 ) 17

[ 90 − 100 ) 23

[ 100 − 110 ) 25

[ 110 − 120 ) 4

[ 120 − 130 ) 4

Practice

Use the histogram shown below to answer the following questions: