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2 years ago

Need help with this math question

Mathematics

1 answer:

olga_2 [115]2 years ago

6 0

The correlation coefficient is -0.87; strong correlation

<h3>How to determine the correlation coefficient?</h3>

The given parameters are:

x = Time spent working out

y = lbs Overweight

Next, we enter the table of values in a graphing tool.

From the graphing tool, we have the following summary:

<u>X Values</u>

∑ = 27.1
Mean = 2.71
∑(X - Mx)2 = SSx = 22.569

<u>Y Values</u>

∑ = 89
Mean = 8.9
∑(Y - My)2 = SSy = 778.9

<u>X and Y Combined</u>

N = 10
∑(X - Mx)(Y - My) = -114.19

<u>R Calculation</u>

r = ∑((X - My)(Y - Mx)) / √((SSx)(SSy))

r = -114.19 / √((22.569)(778.9))

r = -0.8613

Approximate

r = -0.87

This means that the correlation coefficient is -0.87

Also, the correlation coefficient is a strong correlation, because it is closer to -1 than it is to 0

Read more about correlation coefficient at:

brainly.com/question/27226153

#SPJ1

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Step-by-step explanation:

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