Reference no: EM13499254

Question 1 How many independent variables are in a 4 x 6 factorial design? How many conditions (cells) are in this design?

Question 2 what is the difference between a complete factorial design and an incomplete factorial design?

Question 3 Explain the difference between a two-way ANOVA and a three-way ANOVA.

Question 4 Complete each of the following ANOVA summary tables. In addition, answer the following questions for each of the ANOVA summary tables: a. What is the factorial notation? 2x 3 b. How many conditions were in the study? c. How many subjects were in the study? d. Identify significant main effects and interaction effects.

Source	df	SS	MS	F
A	1	60
B	2	40
A x B	2	90
Error	30
Total	35	390

Source	df	SS	MS	F
A	2	40
B	3	40
A x B	6	150
Error	72
Total	83	390

Source	df	SS	MS	F
A	1	10
B	1	60
A x B	1	20
Error	36
Total	39	150

A researcher is attempting to determine the effects of practice and gender on a timed task. Participants in an experiment are given a computerized search task. They search a computer screen of various characters and attempt to find a particular character on each trial. When they find the designated character, they press a button to stop a timer. Their reaction time (in seconds) on each trial is recorded. Subjects practice for 2, 4, or 6 hours and are either female or male. The reaction time data for the 30 subjects appear here.

2 hours:

Women	Men
12	11
13	12
12	13
11	12
11	11

4hours:

Women	Men
10	8
10	8
10	10
7	9

6 hours:

Women	Men
7	5
5	6
7	8
6	6
7	8

Source	df	SS	MS	F
Gender		0.027
Practice		140.60
Practice x Gender		0.073
Error		28.00
Total		168.70

c. What conclusions can be drawn from the F-ratios?

d. What is the effect size, and what does this mean?

e. Graph the means.

4. What is a factor? How can the use of factors benefit a design?

5. Explain main effects and interaction effects.

7. Describe and explain three trade-offs present in experiments.