Plot the Residuals Against the Predicted Values of Y

question 172

Essay

Plot the residuals against the predicted values of y. Does the variance appear to be constant?

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Definitions:

Confidence Coefficient

The probability level or percentage that measures the degree of certainty in a confidence interval.

α

Often represents the level of significance in statistical tests, marking the probability threshold below which the null hypothesis is rejected.

Degrees of Freedom

The quantity of independent variables or measures that can change during the computation of a statistic.

T Distribution

A probability distribution used in statistics that arises when estimating the mean of a normally distributed population in situations where the sample size is small and population standard deviation is unknown.