I don't understand this at all I just need an answer plz
1 answer:
The correlation coefficient has to do with how well the points line up. If they are all on a line with positive slope, the correlation coefficient is 1. If that line has negative slope, the correlation coefficient is -1.
When the points are not on a line, the magnitude of the correlation coefficient is related to how "scattered" the points are. Completely random points that lie on no discernible line have a correlation coefficient of 0.
The given points lie near a line with positive slope, so the correlation coefficient is near 1. The most appropriate choice here is r = 1.
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The computed value of the correlation coefficient for this data is 0.968.
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In this question, we find the derivatives, using the chain's rule.
Doing this, the derivative is:
Chain Rule:
Suppose we have a function , and want to find it's derivative as function of t. It will be given by:
Thus, we have to find the desired derivatives, which are:
- w of x:
Considering
- w of y:
Considering
- w of z:
Considering
- Derivatives of x, y and z as functions of t:
- Derivative of w as function of t.
Now, we just replace what we found into the formula. So
Applying the multiplications:
Applying the simplifications:
Which is the derivative.
For more on the chain rule, you can check brainly.com/question/12795383