Reference no: EM13251272
1. How many independent variables are in a 4 Â 6 factorial designs?
How many conditions (cells) are in this design?
2. What is the difference between a cell (condition) mean and the means used to interpret a main effect?
3. What is the difference between a complete factorial design and an incomplete factorial design?
4. Explain the difference between a two-way ANOVA and a three-way ANOVA.
5. 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?
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
|
60
|
|
|
|
|
A X B
|
6
|
150
|
|
|
|
|
Error
|
72
|
|
|
|
|
|
Total
|
83
|
400
|
|
|
|
|
Source
|
df
|
ss
|
ms
|
F
|
|
|
A
|
1
|
10
|
|
|
|
|
B
|
1
|
60
|
|
|
|
|
A X B
|
1
|
20
|
|
|
|
|
Error
|
36
|
|
|
|
|
|
Total
|
39
|
150
|
|
|
|
6. 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
|
|
2 Hours
|
12
|
11
|
|
|
13
|
12
|
|
|
12
|
13
|
|
|
11
|
12
|
|
|
11
|
11
|
|
4 Hours
|
Women
|
Men
|
|
4 Hours
|
10
|
8
|
|
|
10
|
8
|
|
|
10
|
10
|
|
|
8
|
10
|
|
|
7
|
9
|
|
6 Hours
|
Women
|
Men
|
|
6 Hours
|
7
|
5
|
|
|
5
|
6
|
|
|
7
|
8
|
|
|
6
|
6
|
|
|
7
|
8
|
|
Source
|
df
|
ss
|
ms
|
F
|
|
Gender
|
|
0.027
|
|
|
|
Practice
|
|
140.60
|
|
|
|
Gender X Practice
|
|
0.073
|
|
|
|
Error
|
|
28.00
|
|
|
|
Total
|
|
168.70
|
|
|
a. Complete the ANOVA summary table. (If your instructor wants you to calculate the sums of squares, use the preceding data to do so.)
b. Are the values of Fobt significant at . = .05? At . = .01?
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.
2. Explain the difference between multiple independent variables and multiple levels of independent variables. Which is better?
3. What is blocking and how does it reduce "noise"? What is a disadvantage of blocking?
4. What is a factor? How can the use of factors benefit a design?
5. Explain main effects and interaction effects.
6. How does a covariate reduce noise?
7. Describe and explain three trades-offs present in experiments.
|
Explain iron will act as the stronger oxidant
: Aluminum will act as the stronger reducing agent and iron will act as the stronger oxidant. In the spontaneous reaction, the oxidation number of iron will increase.
|
|
Explain how much of the pressure will be due to hydrogen
: 7. 0.500 g each of hydrogen, H2, and carbon monoxide, CO, are introduced into an evacuated 250. mL flask. What will be the total pressure (in atm) in the flask at 22ºC? How much of the pressure will be due to hydrogen
|
|
Find the angle of deviation for the emerging beam
: Light is incident on a thin prism for which n= 1.5. Find the angle of deviation for the emerging beam
|
|
Determine what is the terminating load impedance
: Use Smith Chart: A 100 Ohm air-coaxial transmission line is measured to have an input impedance of 100 + j100 Ohms. If the system is operated at 100 MHz and is one meter long, what is the terminating load impedance
|
|
How can the use of factors benefit a design
: What is a factor? How can the use of factors benefit a design, explain main effects and interaction effects and how does a covariate reduce noise?
|
|
Explain how many grams of silver chloride will be formed
: According to the following reaction, how many grams of silver chloride will be formed upon the complete reaction of 28.4 grams of copper(II) chloride with excess silver nitrate
|
|
Explain what mass of hydrogen h2
: A balloon containing 6.40 g of nitrogen, N2, has a volume of 5.00 L. What mass of hydrogen, H2, must be added to the balloon to expand its volume to 11.0 L
|
|
Determine the largest mass of cargo the balloon can lift
: A spherical balloon has a radius of 6.95 and is filled with helium. The density of helium is0.179, Determine the largest mass of cargo the balloon can lift
|
|
Explain the molecule contains only one tellurium atom
: Use the octet rule to predict the formula of the compound that would form between tellurium and iodine, if the molecule contains only one tellurium atom and only single bonds are formed.
|