# Ebook Problems ANOVA 2Way

## Contents

## EBook Problems Set - Two-Way ANOVA

### Problem 1

In a two-way ANOVA test, what are the typical null hypothesizes?

- Choose all that apply.

*(a) The population means of the first factor are equal.*

*(b) The population means of the first and second factor are equal.*

*(c) The population means of the second factor are equal.*

*(d) There is no interaction between the two factors.*

Answer

### Problem 2

Suppose that two factors, A and B, is thought to affect the top speed of a car. We will use two-way ANOVA analysis. Are the population means of factor A equal?

Top Speed | A | B |

93.0 | 1 | 1 |

136.0 | 1 | 2 |

198.0 | 1 | 3 |

88.0 | 2 | 1 |

148.0 | 2 | 2 |

279.0 | 2 | 3 |

- Choose one answer.

*(a) Yes, they are equal.*

*(b) No, they are not equal.*

Answer

### Problem 3

Using the data from the previous problem and two-way ANOVA analysis, are the population means of factor B equal?

- Choose one answer.

*(a) Yes, they are equal.*

*(b) No, they are not equal.*

Answer

### Problem 4

Using the data from the previous problem and two-way ANOVA analysis, is there an interaction effect between the two factors?

- Choose one answer.

*(a) Yes, there is an interaction effect.*

*(b) No, there is no interaction effect.*

Answer

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