Two Variable Statistics

Two variable data sets can be analyzed by accessing the 2-Var Stats menu. The 2-Var Stats menu can be found as the first item under the STAT CALC menu. 

The following calculations are summarized and shown on the output screen of the calculator for two variable statistics: 
 

Steps for calculating two variable statistics on the TI-82: 
 
1. Enter the two variable data into list  L1 and L2.  The independent variable's data should be input into L1, while the dependent variable's data should be keyed into L2. 

2. Press , , and 3:SetUp... to chose L1 from the XList and L2 from the Ylist under 2-Var Stats.  This instructs the calculator to use L1 as the independent variable's data list, while using L2 as the dependent variable's data. 

3. Press , , and 2:2-Var Stats. The view screen should have '2-Var Stats' on it with the blinking cursor after it. 

4. Press .  The statistics listed above will be displayed for the data in list L1. 
 

Steps for calculating two variable statistics on the TI-83: 
Note: There is no set-up selection on the  CALC menu on the TI-83 calculator. 

1. Enter the independent variable's data into list  L1, while entering the dependent variable's data into L2. 

2. Press , , and 2:2-Var Stats. The view screen should have '2-Var Stats' on it with the blinking cursor after it. 

3. Input the list that you keyed the data by pressing "Alpha", and "1"- for L1, or "2" for L2, "3" for L3, etc. 

4. Press .  The statistics listed above will be displayed for the data in list L1 and L2. 
 

Example: Use the following data to calculate two variable statistics. 
 

The two variable statistics calculated should look like this:     

The first two screens have an arrow just to the left of the last entry which indicates the display continues.  To view the rest of the output, arrow down until all of the statistics are displayed.