Question

1. Identify the 5 assumptions in testing the significance of the Correlation Coefficient and put them in your own words. [5 sentences]

Answer 1

Ans:

1)The residual errors are mutually independent (no pattern).

2)The data are produced from a random sample or randomized experiment.

3)The standard deviations of the population y values about the line are equal for each value of x.

4)The y values for any particular x value are normally distributed about the line. This implies that there are more y values scattered closer to the line than are scattered farther away.

5)There is a linear relationship in the population that models the average value of y for varying values of x.