Solution 10582: Using the Chi-Squared Goodness of Fit Test on the TI-84 Plus Family or TI-Nspire™ Handheld in TI-84 Plus Mode.
How can I use the Chi-Squared Goodness of Fit test on the TI-84 Plus or TI-Nspire handheld in TI-84 Plus mode with OS 2.30 and higher?
The command for the Chi-Squared Goodness of Fit test is located under the STAT-TESTS menu. Please see the below example:
Calculate the Chi-Squared goodness of fit test for these data.
• Press [STAT][ENTER] to enter the STATS editor.
• Enter the numbers in L1 and L2.
• Press [2nd][QUIT].
• Press [STAT].
• Press [→] [→] to select the TESTS Menu.
• Select D:c2 GOF-Test...
L1 is the list of observed values and L2 the list of expected values. The degree of freedom (df) is the count of sample categories minus sample restrictions.
• Select Calculate and Press [ENTER]. Chi-Squared= 5.995149912 and p=.3066911386 should be displayed.
Please see the TI-84 Plus family guidebooks for additional information.
NOTE: TI-Nspire in TI-84 Plus mode users may refer to the TI-84 Plus family guidebook.