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
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[ 1] |
[ ,] |
[ 3] |
[ SHIFT] [,] |
[ 1] [2] |
[ M+] |
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[ 3] |
[ ,] |
[ 4] |
[ SHIFT] [,] |
[ 1] |
[ M+] |
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[ 5] |
[ ,] |
[ 6] |
[ SHIFT] [,] |
[ 7] |
[ M+] |
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[ 2] |
[ ,] |
[ 3] |
[ SHIFT] [,] |
[ 1] [3] |
[ M+] |
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[ 3] |
[ ,] |
[ 5] |
[ SHIFT] [,] |
[ 0] |
[ M+] |
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[ (-)] [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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