# Question

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

## Answer to relevant Questions

Consider an experiment to determine the effects of alcohol and of marijuana on driving. Five randomly selected subjects are given alcohol to produce legal drunkenness and then are given a simulated driving test (scored from ...Political theorist Karl Marx is known for his theory that the working class, to put an end to capitalism and establish a communist society, would eventually rise up and overthrow the upper-class members of society who ...A pediatrician speculated that frequency of visits to his office may be influenced by type of medical insurance coverage. As an exploratory study, she randomly chose 15 patients: 5 whose parents belong to a health ...The following 2 × 2 cross-tabulation represents whether politicians are Republican or Democrat by whether they favor or oppose stricter gun control laws. Applying Yates’s correction, conduct a chi-square test of ...A radio executive considering a switch in his station’s format collects data on the radio preferences of various age groups of listeners. Using the following cross-tabulation, test the null hypothesis that radio format ...Post your question

0