Question 46
What does the Pearson product moment correlation coefficient measure?
Question 47
CORRECT TEXT
A linear model has the following characteristics:
*A dependent variable (y)
*One continuous variable (xl), including a quadratic term (x12)
*One categorical (d with 3 levels) predictor variable and an interaction term (d by x1)
How many parameters, including the intercept, are associated with this model?
Enter your numeric answer in the space below. Do not add leading or trailing spaces to your answer.
Question 48
Refer to the exhibit:
The plots represent two models, A and B, being fit to the same two data sets, training and validation.
Model A is 90.5% accurate at distinguishing blue from red on the training data and 75.5% accurate at
doing the same on validation data. Model B is 83% accurate at distinguishing blue from red on the training
data and 78.3% accurate at doing the same on the validation data.
Which of the two models should be selected and why?
Question 49
Refer to the REG procedure output:
Click on the calculator button to display a calculator if needed.
Question 50
This question will ask you to provide a missing option.
Complete the following syntax to test the homogeneity of variance assumption in the GLM procedure:
Means Region / <insert option here> =levene;