Question

If the coefficient of correlation is a positive value, then______________.

a. the slope of the regression
b. line must also be positive
c. can be either negative or positive
d. can be zero
e. None of these answers is correct.

Answer 1

The correct answer is letter "E": None of these answers is correct.

Step-by-step explanation:

The correlation coefficient (ρ) is a method to measure how strong is the relationship between variables. The relationship will fluctuate between numeric value (-1) and (1). If the correlation is greater than (0) the correlation is positive and when it is lower than (0) the correlation is negative. If the value equals (0) there is no correlation.

Plotted in a graph, when a correlation is positive the slope of the regression is positive (shifts to the right). When the correlation is negative the slope of the regression is negative (shifts to the left).