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If the correlation coefficient in an ordinary least squares regression = 1.00, then A. all the data points must fall exactly on a straight line with a positive slope. B. all the data points must fall exactly on a straight line with a slope that equals 1.00. C. all the data points must fall exactly on a horizontal straight line with a zero slope. D. all the data points must fall exactly on a straight line with a negative slope.

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JeanaShupp

Answer: Option A is correct.

Step-by-step explanation:

  • The correlation coefficient(r) is a statistical measure that computes the strength of the relationship between two variables.

It lies between -1 and 1.

If the correlation coefficient in an ordinary least squares regression = 1.00.

That indicates that there is a perfect relationship between the variables.

i.e. all the data points must fall exactly on a straight line with a positive slope. .

[when r is positive, the slope of the line is positive].

i.e. option A is correct.

All the data points must fall exactly on a straight line with a positive slope. Then the correct option is A.

What is the correlation coefficient?

It is a statistical concept that helps in establishing a relation between the predicted and actual value obtained in a statistical experiment. It explains the exactness of the predicted value and actual value.

If the correlation coefficient in an ordinary least squares regression = 1.00.

The correlation coefficient lies between -1 to 1.

If the correlation coefficient in an ordinary least squares regression is 1.00.

Then it indicates that there is a perfect relationship between the variables. That is all the data points must fall exactly on a straight line with a positive slope.

Thus, the correct option is A.

More about the correlation coefficient link is given below.

https://brainly.com/question/12400903