# Question: 1 Rather than a series of t tests analysis of

1. Rather than a series of t tests, analysis of variance is used because

a. it holds Type 1 error at a constant level.

b. it is too much work to do a series of t tests.

c. it increases Type 1 error.

d. it makes a number of decisions, whereas a series of t tests makes a single overall decision.

2. To find a significant difference with an analysis of variance, you hope to maximize

a. the between-groups mean square.

b. the within-groups mean square.

c. the within-groups sum of square.

d. variation within groups.

3. The F ratio is larger when

a. the between-groups mean square is smaller.

b. the within-groups mean square is smaller.

c. the difference between means is smaller.

d. None of the above

4. Which of the following is not a requirement of analysis of variance?

a. A comparison of three or more independent means

b. Random sampling

c. A normal distribution

d. Ordinal data

a. it holds Type 1 error at a constant level.

b. it is too much work to do a series of t tests.

c. it increases Type 1 error.

d. it makes a number of decisions, whereas a series of t tests makes a single overall decision.

2. To find a significant difference with an analysis of variance, you hope to maximize

a. the between-groups mean square.

b. the within-groups mean square.

c. the within-groups sum of square.

d. variation within groups.

3. The F ratio is larger when

a. the between-groups mean square is smaller.

b. the within-groups mean square is smaller.

c. the difference between means is smaller.

d. None of the above

4. Which of the following is not a requirement of analysis of variance?

a. A comparison of three or more independent means

b. Random sampling

c. A normal distribution

d. Ordinal data

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