Question

For a sample of 7 people, their weight (kg) and walking speed (km/hour) were measured:

Weight | 51 | 62 | 68 | 76 | 83 | 89 | 95 |

Speed | 6.4 | 6.2 | 5.9 | 5.2 | 4.4 | 3.8 | 3.2 |

If a person weighs 70 kg, what would we expect their average walking speed to be?

Answer #1

Sum of *X* = 524

Sum of *Y* = 35.1

Mean *X* = 74.8571

Mean *Y* = 5.0143

Sum of squares (*SS _{X}*) = 1454.8571

Sum of products (

Regression Equation = ŷ =

ŷ = -0.0776

So for x=70, ŷ = (-0.0776**70)* + 10.8226=5.3906=5.39

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What is your height in inches?
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cumulative Grade Point Average (GPA) at FTCC or your primary
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67
100
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7
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5
3
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8
4
61
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4
7
5
56
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3.7
6
6
61
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4
7
7
65
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3.8
7
8
72
235
3.22
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63
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6...

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