PSYC-FP4700 Assessment 4 | ANOVA, Chi-Square Tests, and Regression with
Complete Solution | Latest Update 2026
PSYC-FP4700 Assessment 4 Worksheet
ANOVA, Chi-Square Tests, and Regression
Complete the following problems within this Word document. Do not submit other files. Show your work
for problem sets that require calculations. Ensure that your answer to each problem is clearly visible. You
may want to highlight your answer or use a different type color to set it apart.
ANOVA
Problem Set 4.1: Critical Value
Criterion: Explain the relationship between k and power based on calculated k values.
Instructions: Read the following and answer the questions.
Work through the following and write down what you see in the F-table. This will help familiarize you
with the table.
The F-table: The degrees of freedom for the numerator (k − 1) are across the columns; the degrees of
freedom for the denominator (N − k) are across the rows in the table. A separate table is included for a
.05 and .01 level of significance.
Increasing the levels of the independent variable (k):
Suppose we have a sample size of 24 participants (N = 24). Record the critical values given the following
values for k:
.05 .01 k = 2 4.30
7.95 k = 4 3.10 4.94 k = 6 2.77 4.25 k
= 8 2.66 4.03
As k increases (from 1 to 8), does the critical value increase or decrease? Based on your answer, explain
how k is related to power.
The critical value will decrease as K increases. This means that the test is more likely to reject
the null hypothesis when it should be rejected.
Problem Set 4.2: One-way ANOVA in JASP
Criterion: Calculate an ANOVA in JASP.
Data: Use the dataset stress.jasp.The dataset stress.jasp is a record of the amount of fat (in grams)
consumed in a buffet-style lunch among professional bodybuilders under conditions of high, moderate,
and low stress.
1
, Instructions: Complete the steps below.
1. Download stress.jasp. Double-click the icon to open the dataset in JASP.
2. In the Toolbar, click ANOVA. In the menu that appears, under Classical, select
ANOVA.
3. Select Fat grams consumed and then click the upper Arrow to send it over to the Dependent
Variable box.
4. Select Stress level and then click the lower Arrow to send it over to the Fixed factors box.
5. Check the Descriptive statistics box.
6. Copy and paste the output below.
ANOVA
ANOVA - Fat Grams Consumed
Cases Sum of Squares df Mean Square F p
Stress
15.600 2 7.800 1.773 0.212
Level
Residuals 52.800 12 4.400
Note. Type III Sum of Squares
Descriptives
Descriptives - Fat Grams Consumed
Stress LevelN Mean SD SE Coefficient of variation
High 5 8.600 2.408 1.077 0.280
Low 5 6.200 1.924 0.860 0.310
Moderate 5 6.800 1.924 0.860 0.283
Problem Set 4.3: One-way ANOVA in Excel
Criterion: Calculate an ANOVA in Excel.
Instructions: Use the data from the table below to complete the following steps:
a. Open Excel to an empty sheet.
b. Enter the data from this table.
2
Complete Solution | Latest Update 2026
PSYC-FP4700 Assessment 4 Worksheet
ANOVA, Chi-Square Tests, and Regression
Complete the following problems within this Word document. Do not submit other files. Show your work
for problem sets that require calculations. Ensure that your answer to each problem is clearly visible. You
may want to highlight your answer or use a different type color to set it apart.
ANOVA
Problem Set 4.1: Critical Value
Criterion: Explain the relationship between k and power based on calculated k values.
Instructions: Read the following and answer the questions.
Work through the following and write down what you see in the F-table. This will help familiarize you
with the table.
The F-table: The degrees of freedom for the numerator (k − 1) are across the columns; the degrees of
freedom for the denominator (N − k) are across the rows in the table. A separate table is included for a
.05 and .01 level of significance.
Increasing the levels of the independent variable (k):
Suppose we have a sample size of 24 participants (N = 24). Record the critical values given the following
values for k:
.05 .01 k = 2 4.30
7.95 k = 4 3.10 4.94 k = 6 2.77 4.25 k
= 8 2.66 4.03
As k increases (from 1 to 8), does the critical value increase or decrease? Based on your answer, explain
how k is related to power.
The critical value will decrease as K increases. This means that the test is more likely to reject
the null hypothesis when it should be rejected.
Problem Set 4.2: One-way ANOVA in JASP
Criterion: Calculate an ANOVA in JASP.
Data: Use the dataset stress.jasp.The dataset stress.jasp is a record of the amount of fat (in grams)
consumed in a buffet-style lunch among professional bodybuilders under conditions of high, moderate,
and low stress.
1
, Instructions: Complete the steps below.
1. Download stress.jasp. Double-click the icon to open the dataset in JASP.
2. In the Toolbar, click ANOVA. In the menu that appears, under Classical, select
ANOVA.
3. Select Fat grams consumed and then click the upper Arrow to send it over to the Dependent
Variable box.
4. Select Stress level and then click the lower Arrow to send it over to the Fixed factors box.
5. Check the Descriptive statistics box.
6. Copy and paste the output below.
ANOVA
ANOVA - Fat Grams Consumed
Cases Sum of Squares df Mean Square F p
Stress
15.600 2 7.800 1.773 0.212
Level
Residuals 52.800 12 4.400
Note. Type III Sum of Squares
Descriptives
Descriptives - Fat Grams Consumed
Stress LevelN Mean SD SE Coefficient of variation
High 5 8.600 2.408 1.077 0.280
Low 5 6.200 1.924 0.860 0.310
Moderate 5 6.800 1.924 0.860 0.283
Problem Set 4.3: One-way ANOVA in Excel
Criterion: Calculate an ANOVA in Excel.
Instructions: Use the data from the table below to complete the following steps:
a. Open Excel to an empty sheet.
b. Enter the data from this table.
2
