A Professor Intends to Compare the Performances of His First

question 9

Multiple Choice

A professor intends to compare the performances of his first year economics subject students at the four campuses of the university. In order to do so, he selects a random sample of 40 first year economics students from each campus. What is this type of sampling called?

• A)Stratified random sampling.
• B)Simple random sampling.
• C)Cluster sampling.
• D)None of these choices are correct.

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Definitions:

SST

Total sum of squares in statistical analysis, representing the total variation in the observed data relative to the mean.

Multiple Linear Regression

A statistical technique that models the relationship between a dependent variable and two or more independent variables by fitting a linear equation to observed data.

Partial Regression Slope Coefficients

Quantitative measures in multiple regression models that represent the rate of change in the dependent variable for one-unit change in the predictor variable, holding other variables constant.

Coefficient of Multiple Determination

A statistical measure that represents the proportion of variance in a dependent variable that can be predicted from multiple independent variables.