ANOVA

Front

What does ANOVA stand for?

Back

Analysis of Variance

Front

Which is a correct example of an ANOVA application? a) Comparing heights of students in three different classes, b) Testing correlation between age and income, c) Predicting stock prices, d) Testing if coin is fair

Back

Comparing heights of students in three different classes

Front

A key difference between one-way and two-way ANOVA is:

Back

Two-way includes interaction between two factors

Front

Boxplots can be used in R to visually compare means across groups before ANOVA.

Back

True

Front

In R, _____ function is used for ANOVA.

Back

aov()

Front

If the p-value in ANOVA is 0.04 and α = 0.05, what do we conclude?

Back

Reject the null hypothesis

Front

The output of aov() must be passed to summary() to view F-statistic and p-value.

Back

True

Front

Match the following: 1-a, 2-b, 3-c, 4-d, 5-e, 6-f, 7-g, 8-h; 1-h, 2-e, 3-d, 4-a, 5-f, 6-g, 7-b, 8-d; 1-c, 2-e, 3-a, 4-h, 5-b, 6-d, 7-g, 8-f; 1-a, 2-b, 3-e, 4-d, 5-c, 6-f, 7-g, 8-h

Back

1-a, 2-b, 3-c, 4-d, 5-e, 6-f, 7-g, 8-h

Front

ANOVA determines P-value from the ______

Back

F-statistic

Front

Two-way ANOVA involves __________ independent variables.

Back

Two