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Answers to Practice Opportunities

3.

Answers: y = 1.54 + 0.91x; r = 0.99; the mean of y 2.33

Solution:

[ON]

[MODE] [3] [1]

[SHIFT] [AC] [=]

Enter Data

[1]

[,]

[3]

[SHIFT] [,]

[1] [2]

[M+]

[3]

[,]

[4]

[SHIFT] [,]

[1]

[M+]

[5]

[,]

[6]

[SHIFT] [,]

[7]

[M+]

[2]

[,]

[3]

[SHIFT] [,]

[1] [3]

[M+]

[3]

[,]

[5]

[SHIFT] [,]

[0]

[M+]

[(-)] [7]

[,]

[(-)] [5]

[SHIFT] [,]

[6]

[M+]

Press [SHIFT] [7] [=] and your display will tell you that the a is 1.539285357.

Press [SHIFT] [8] [=] and your display will tell you that the b is 0.910819737

Press [SHIFT] [(] [=] and your display will tell you that the r is 0.993456779.

Press [SHIFT] [4] [=] and your display will tell you that the mean of y is 2.333333333.

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