Coby analyzes a data set and finds that r = 0.88. what is the coefficient of determination for his data set?

Step-by-step explanation:

r represents the correlation coefficient between two sets of data. It is a measure of the degree of association between the two sets of data and gives insight into the strength and direction of the relationship.

On the other hand, is the coefficient of determination for a given data set. It is a measure of the predictive power of a linear model.

Given r, is simply the square of r;

in this case we are given, r = 0.88. Therefore,

arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation:

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.