Question
Let's say that we are interested in the relationship between shoe size and height. Let's say...
Let's say that we are interested in the relationship between shoe size and height. Let's say we have the following data. What is the regression equation between these two variables? X (Shoe Size in inches): 13 12.5 11 11.5 12 11 13 14 13 9 8 Y (Height in inches): 68 69 70 67.4 69 73 74 71 70.5 64 67.
Answers:
|
y = -.89931x - 58.88982 |
|
|
y = .89931x + 58.88982 |
|
|
y = 58.88982x +.89931 |
|
|
y = .89931x - 58.88982 |
Providing your own answer what is the slope value to the previous question?
Homework Answers
Answer #1
| X | Y | XY | X^2 | Y^2 |
| 13 | 68 | 884 | 169 | 4624 |
| 12.5 | 69 | 862.5 | 156.25 | 4761 |
| 11 | 70 | 770 | 121 | 4900 |
| 11.5 | 67.4 | 775.1 | 132.25 | 4542.76 |
| 12 | 69 | 828 | 144 | 4761 |
| 11 | 73 | 803 | 121 | 5329 |
| 13 | 74 | 962 | 169 | 5476 |
| 14 | 71 | 994 | 196 | 5041 |
| 13 | 70.5 | 916.5 | 169 | 4970.25 |
| 9 | 64 | 576 | 81 | 4096 |
| 8 | 67 | 536 | 64 | 4489 |
| n | 11 |
| sum(XY) | 8907.10 |
| sum(X) | 128.00 |
| sum(Y) | 762.90 |
| sum(X^2) | 1522.50 |
| sum(Y^2) | 52990.01 |
| b | 0.8993 |
| a | 58.88982 |
ycap = 0.89931x + 58.88982
slope = 0.89931
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