A Student Runs an Experiment to Study the Effect of Gas

question 1

Multiple Choice

A student runs an experiment to study the effect of gas brand and car type on mileage.She uses 3 different brands of gas on 8 different types of cars.

• A)Gas brand SS: 3 df; Car type SS: 7 df; SSE: 14 df
• B)Gas brand SS: 3 df; Car type SS: 4 df; SSE: 12 df
• C)Gas brand SS: 1 df; Car type SS: 7 df; SSE 14 df
• D)Gas brand SS: 2 df; Car type SS: 3 df; SSE: 8 df
• E)Gas brand SS: 2 df; Car type SS: 7 df; SSE 14 df

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Definitions:

Data

Data gathered for the purpose of reference or analysis.

Y-intercept

The point at which a line crosses the y-axis of a graph, reflecting the value of the dependent variable when the independent variable is zero.

Calculate

To determine the value or amount of something typically by mathematical processes.

Regression Slope

The amount by which the dependent variable is expected to change for a one-unit change in the independent variable in a regression model.