- Enter data
- Enter the data into a list, say
`L`

._{1} - Get the max and min
- To find the minimum and maximum values, press
`STAT`

. Several menu titles appear.`EDIT`

is highlighted. - Use the arrow key to select the
`CALC`

menu title. The`CALC`

menu appears. - Item #1,
`1-Var Stats`

, is already highlighted. - Press
`ENTER`

. The phrase`1-Var Stats`

appears in the window. - Press
`2nd L`

._{1} - Press
`ENTER`

. A list of statistics appears for the data in list`L`

._{1} - Use the arrow key to scroll down to the min and the max, labeled
`minX`

and`maxX`

. Record them. - Set up the histogram plot
- Press
`2nd STAT PLOT`

(in the upper left corner). The`STAT PLOTS`

menu appears. - Use the arrow keys, if necessary, to select one of the plots, say
`Plot1`

. - Press
`ENTER`

. - Use the left/right arrow keys, if necessary, to select
`On`

. - Press
`ENTER`

. This turns`Plot1`

on. (The other plots should be turned off.) - Press the down arrow once. This allows you to select the type of plot.
- Use the left/right arrows to select the histogram type. (The icon looks like a little histogram.)
- Press
`ENTER`

. - Press the down arrow once. This allows you to select the list containing the data.
- Press
`2nd L`

._{1} - Set up the window
- Press
`WINDOW`

(on the top row of buttons). - Next to
`Xmin`

, enter the value of the lower limit of the first class. It must be less than or equal to the minimum value in the list. - Press the down arrow once.
- Next to
`Xmax`

, enter a value greater than the maximum value in the list, but not much greater. (A safe choice is`Xmax`

plus the class width.) - Press the down arrow.
- Next to
`Xscl`

, enter the class width. - Press the down arrow.
- Next to
`Ymin`

, enter`0`

. - Press the down arrow.
- Next to
`Ymax`

, enter what you expect to be the largest frequency of all the classes. This value may be modified later, if necessary. - Draw the histogram
- Press
`GRAPH`

(in the upper right corner). The histogram appears.

- Follow the instructions above to create a histogram of the data.
- Press
`TRACE`

(on the top row of buttons). In the bottom left-hand corner appear the lower limits of the first and second classes. To the right of that appears the frequency of the first class. - Press the right arrow key once. Now we see the lower limits of the second and third class and the frequency of the second class.
- Continue to press the right arrow to see the remaining classes and their frequencies.
- You may use the left arrow to go back the other way. A blinking X shows you the current class.

This page was last modified on Jan 21, 2002.

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