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choli [55]
3 years ago
8

Explain what each of the following sample correlation coefficients tells you about the relationship between the x and y values i

n the sample. a. requals1 b. requalsminus1 c. requals0 d. requals0.86 e. requals0.06 f. requalsnegative 0.89
Mathematics
1 answer:
Alchen [17]3 years ago
6 0

Answer: The description are as follows:

Step-by-step explanation:

Correlation coefficients is a statistical measure that measures the relationship between the two variables.

(a) r = 1, it means that there is a Perfect positive relationship between the two variables. If there is positive increase in one variable then other variable also increases with a fixed proportion.

(b) r = -1, it means that there is a perfect negative relationship between the two variables. If there is positive increase in one variable then other variable decreases with a fixed proportion.

(c) r = 0, this is a situation which shows that there is no relationship between the two variables.

(d) r = 0.86, this is a situation  which shows that there is a fairly strong positive relationship between the two variables.

(e) r = 0.06, it is nearly zero which represents that either there is a very minor positive relationship between the two variables or there is no relationship between them.

(f) r = -0.89,  this is a situation  which shows that there is a fairly strong negative relationship between the two variables.

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Answer:

pi × 18cm^2

Or approximately,

56.52cm^2 (using 3.14 for pi)

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Step-by-step explanation:

Area of a circle is pi times [radius squared].

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Problem can be solved by finding area of whole circle, and then using ratios.

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Knowing that the width is 4, the height must be 8. This gives us an area of 32.

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