For now, the last option we will explore on the STAT-TEST menu is the Chi Square Test option. This option will get us to use the matrix capabilities of the TI-83 Plus. Follow the steps below for the given set of data.
[10 9 8]
[13 16 12]
First we must put our data into a matrix. To do this, press 2nd, x-1, left arrow once, then ENTER. Here enter the number of rows and columns for your matrix, then enter your data as shown above. | |
Once your data is stored in a matrix, press STAT, then choose TESTS then press ALPHA, C. This should give you the screeen below. | |
Make sure that your observed values are in [A], and your expected values are in [B]. | |
Choosing the calculate option yeilds the results shown to the right. | |
Choosing the draw option gives a nice graphical representation of the results. | |
To check your expected values, just press 2nd, x-1, left arrow once, then ENTER. View matrix [B]. |