Index 1 2 3 4 5 6 7
Temperature (F) 72 71 78 75 81 77 68
Pair of Gloves 37 37 32 36 33 35 39
Predict the number of pairs of gloves produced when x = 74.
X | Y | XY | X^2 | Y^2 |
72 | 37 | 2664 | 5184 | 1369 |
71 | 37 | 2627 | 5041 | 1369 |
78 | 32 | 2496 | 6084 | 1024 |
75 | 36 | 2700 | 5625 | 1296 |
81 | 33 | 2673 | 6561 | 1089 |
77 | 35 | 2695 | 5929 | 1225 |
68 | 39 | 2652 | 4624 | 1521 |
n | 7 |
sum(XY) | 18507.00 |
sum(X) | 522.00 |
sum(Y) | 249.00 |
sum(X^2) | 39048.00 |
sum(Y^2) | 8893.00 |
b | -0.5035 |
a | 73.1197 |
ycap = a + bx
yacp = 73.1197 - 0.5035x
when x = 74
value = 73.1197 - 0.5035x
= 73.1197 - 0.5035 * 74
value = 35.8607
approx 36
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