A teacher uses a ten point grading scale to measure student performance. The following data were the final course averages for a class of 23 students:

56, 61, 79, 91, 91, 74, 70, 93, 55, 54, 93, 55, 65, 92, 64, 46, 97, 56, 79, 70, 60, 61, 68

or just press when at the main menu screen.

Now we have to set the viewing window.

Press (V-Window).

Set up the viewing window as follows:

Xmin:    39    Ymin:    - 4

max:    117    max:    11

s c l:      10    s c l:     1

Press (Green more key)

Scroll down and set the parameters as follows:

G-Type:        Hist         Press if necessary.

XList:          List1         Press if necessary.

Press (GRPH)

Press (GPH1)

Set the parameters as follows:

Press (DRAW)

The histogram will appear on the calculator screen.

Use the right cursor arrow to move the "cross hairs" to get the frequencies in each category. The follow are visible:

This will terminate the trace and return you to the calculator screen having the 1VAR submenu on it.

Scroll down to see the following summary statistics that have been calculated on the data:

1-Variable