Stat 3500 Terms
If an independent variable is added to a multiple regression model, the R^2 value
becomes larger even if the variable added is not statistically significant.
The process of using the same or similar experimental units for all treatments is called
blocking
If the coefficient of determination is equal to 1, then the correlation coefficient
can be either −1 or +1.
In factorial designs, the response produced when the treatments of one factor interact with the treatments of another in influencing the response variable is known as
interaction
What is the joint effect of two independent variables acting together called?
interaction
A multiple regression model has
more than one independent variable.
What is the measure of goodness of fit for the estimated regression equation?
multiple coefficient of determination
Compared to the prediction interval estimate for a particular value of y in a linear regression model, the interval estimate for an average value of y will be
narrower
The number of times each experimental condition is observed in a factorial design is known as
replication
What is the difference between the observed value of the dependent variable and the value predicted using the estimated regression equation?
residual
In logistic regression,
the dependent variable only assumes two discrete values.
The ANOVA procedure is a statistical approach for determining whether or not the means of _____ are equal.
three or more populations
To calculate the residual, you would take
yi − ŷ