GeoGebra
You can use GeoGebra
to make a histogram. There are several ways of doing this, but this method ensures that the class boundaries are exactly as you set them to be.
GeoGebra
Instruction 1
- 1.
- Open
Algebra View
,Graphics View
andSpreadsheet
mode underView
inMenu
. - 2.
- Enter the lower endpoint of the first interval in column
A
. - 3.
- Enter the upper endpoint of each interval (including the first one) in the cells below.
- 4.
- Enter your frequencies in column
B
. Check that you have one more filled-in cell in columnA
than in columnB
. - 5.
- Make a list by selecting all observation times and click
List
in
Toolbar
. In the pop-up window that appears, changeName
to “ClassBoundaries” and clickOK
. - 6.
- Make another list by selecting all frequencies and click
List
in
Toolbar
. In the pop-up window that appears, changeName
to “Frequencies” and clickOK
. - 7.
- Use the command
FrequencyPolygon(<List of Class Boundaries>, <List of Heights>)
in
Algebra View
. Insert “ClassBoundaries” as<List of Class Boundaries>
and insert “Frequencies” as<List of Heights>
. PressEnter
.Your histogram will be displayed in
Graphics View
. Remember to adjust the window so that the entire chart is visible.