Refer to Table 12.1, in which the relationship between x5mathematics achievement test score and y5final calculus grade was studied.

1. Enter the data from columns 2 and 3 into L1 and L2 and choose stat ➤ TESTS ➤
F:LinRegTTest (choice E on the TI-83). The screen in Figure 12.22

(a) will appear.
Select or type L1 for the Xlist and L2 for the Ylist. Select the appropriate alternative for testing H : 0 0 b 5 (or its equivalent, H : 0 0 r 5 ).

2. If you want to plot the regression line, you can use the procedures discussed in Chapter 3 or you can designate a storage location using the RegEQ: line on this screen. Move the cursor to Calculate and press enter to see the results in Figures 12.22

(b) and 12.22(c).
3. Figures 12.22

(b) and 12.22

(c) are actually the same screen, but you will need to scroll down to see the last two entries, r2 and r. Notice that the value of the test statistic, t54.38 is identical to the values calculated by hand in Example 12.2 and also found in Figure 12.7.

Transcribed Image Text:

Student Mathematics Achievement Test Score (x) Final Calculus Grade (y) -234567890 39 65 43 78 21 52 64 82 57 92 47 89 28 73 75 98 34 56 10 52 75