How to Make a Line Chart with GeoGebra
You can use GeoGebra to make two kinds of line charts.
The first kind is a line chart where the observation times are discrete. I’ll show you how to make this kind of line chart in Item 6.
The second kind is a line chart where the observation times are intervals, where the line chart connects the middle points of the bins in a histogram.
So in order to make a line chart of this kind in GeoGebra, you have to make a histogram first. I’ll show you how to make this kind of line chart in Item 7.
GeoGebra Instruction 1
Line Chart with Discrete Observation Times
- 1.
- Open
Algebra View,Graphics ViewandSpreadsheetunder
Viewin
Menu. - 2.
- Enter the observation times converted to hours (e.g.
9.30AM is entered as9.5) in columnA. - 3.
- Enter your observations in column
B. - 4.
- Make a list by selecting all observation times and click
List
in Toolbar. In the pop-up window that appears, changeNameto “Times” and clickOK. - 5.
- Make a list by selecting all observations and click
List in Toolbar. In the pop-up window that appears, changeNameto “Observations” and clickOK. - 6.
- In
Algebra View, typeLineGraph(<List of x-coordinates>, <List of y-coordinates>)
and replace
<List of x-coordinates>withTimes, and<List of y-coordinates>withObservations.The line chart is displayed in
Algebra View.
GeoGebra Instruction 2
Line Chart with Continuous Observation Times
- 1.
- Open
Algebra View,Graphics ViewandSpreadsheetunder Viewin Menu. - 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 observations in column
B. Check that you have one more filled-in cell in columnAthan in columnB. - 5.
- Make a list by selecting all observation times and click
List in Toolbar. In the pop-up window that appears, changeNameto “ClassBoundaries” and clickOK. - 6.
- Make a list by selecting all observations and click
List in Toolbar. In the pop-up window that appears, changeNameto “Observations” 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 “Observations” as<List of Heights>. PressEnter.Your line chart will be displayed in
Graphics View. Remember to adjust the window so that the entire chart is visible.
How to Make a Line Chart with GeoGebra
