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dolphi86 [110]
3 years ago
14

The rover Spirit traveled about 2.5 kilometers its first year on Mars. Solve the equation

Mathematics
1 answer:
Alborosie3 years ago
5 0

Answer:

d = 8.75

Step-by-step explanation:

2.5 x 3.5

=8.75

8.75 / 2.5 = 3.5

have a great day! c:

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<u><em>Explanation</em></u>

Formula for Correlation coefficient :

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First, for each point(x, y), we need to calculate x², y² and xy .

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<em>(Please refer to the attached image for the table )</em>

Here we got, ∑x = 44 , ∑y = 183 , ∑x² = 362 , ∑y² = 6575 and ∑xy = 1480

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r= \frac{n(\Sigma xy)-(\Sigma x)(\Sigma y)}{\sqrt{[n\Sigma x^2-(\Sigma x)^2][n\Sigma y^2-(\Sigma y)^2]}}\\ \\ r=\frac{7(1480)-(44)(183)}{\sqrt{[7(362)-(44)^2][7(6575)-(183)^2]}}\\ \\ r=\frac{10360-8052}{\sqrt{(598)(12536)}}\\ \\ r=\frac{2308}{\sqrt{7496528}}\\ \\ r=0.84

So, the value of the correlation coefficient is 0.84

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