Homework Answers
solution option b) is correct.
(b) It is the ratio of the mean square between to the mean square within.
F = MSB / MSE
F ratio is the ratio of variance between the groups to the variance within the groups. If variance between the groups is significantly more than variance within the groups, then F test result is significant , we can conclude that the mean of all the groups are not equal .
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QUESTION 12 Why is the F statistic also called an F ratio? a. It is the...
Why is the F statistic also called an F ratio? Select one: a. It is the...
Why is the F statistic also called an F ratio? Select one: a. It is the ratio of the sum of squares to the means b. It is the ratio of degrees of freedom c. It is the ratio of one group mean to another. d. It is the ratio of the mean square between to the mean square within.
#16 The test statistic is a. 6.00. b. 2.25. c. 3.00. d. 2.67. #17 The mean...
#16
The test statistic is
a.
6.00.
b.
2.25.
c.
3.00.
d.
2.67.
#17
The mean square due to error (MSE) is
a.
60.
b.
18.
c.
15.
d.
20.
Part of an ANOVA table is shown below. Sum of Degrees Squares Freedom Mean of Source of Variation Square 180 Between Treatments Within Treatments (Error) TOTAL 480 18
5. Identify the following: k (number of groups or samples) N, (number of cases within each...
5. Identify the following: k (number of groups or samples) N, (number of cases within each group or sample) N (total number of cases) df (between-groups degrees of freedom)= How is it calculated? df (within-groups degrees of freedom) How is it calculated? critical value for F (using the F table) SSB (Sum of Squares Between groups) = ssw (Sum of Squares Within groups) Mean square between= How is it calculated? Mean square within= How is it calculated? F ratio (test...
HW Chapter 8 [Spring 2019] Started: Mar 17 at 7:24pm Quiz Instructions Question 16 1 pts...
HW Chapter 8 [Spring 2019] Started: Mar 17 at 7:24pm Quiz Instructions Question 16 1 pts The mean square is: O all of the provided answers D calculated by dividing the sum of squares between by the degrees of freedom between. calculated by dividing the sum of squares within by the degrees of freedom within. is a method for assessing variation in conjunction with the sums of squares measures. Previous Next HW Chapter 8 [Spring 2019] Started: Mar 17 at...
Refer to the following partial one-factor ANOVA results from excel (some information is missing. And you...
Refer to the following partial one-factor ANOVA results from excel (some information is missing. And you need to work it out in the questions below.) Now, the F statistic is equal to: Source of Variation Sum of Squares Degrees of Freedom Mean Square F statistic Between Groups 210.2788 Within Groups 1483 74.15 Total 2113.833 4.79 3.56 1.15 2.84 Referring to the table in question 1. The sum of squares for between groups variation is: 129.99 630.83 1233.4 We cannot tell...
You are given the following ANOVA table, with n = 55. Compute the F statistic for...
You are given the following ANOVA table, with n = 55. Compute the F statistic for the interaction term. Source of Variation Sum of Squares Degrees of Freedom Mean Square F Factor A 127 c-1 = 3 Factor B 784 r-1 = 7 Interaction 253 Error 5761 Total 12.0476 3.608 1.611 0.048 none of the above
21) Consider the partially completed one-way ANOVA summary table. Degrees of Mean Sum Freedom of Squares...
21) Consider the partially completed one-way ANOVA summary table. Degrees of Mean Sum Freedom of Squares Sum of Source Squares Between 330 Within Total 1810 1 16 9 The F-test statistic for this ANOVA procedure is A) 2.33 B) 7.33 C) 5.67 D) 3.67
Question 12 0 pts Suppose a hypertension trial is mounted and 18 participants are randomly assigned...
Question 12 0 pts Suppose a hypertension trial is mounted and 18 participants are randomly assigned to one of the comparison treatments so that each treatment group has 6 participants. Each participant takes the assigned medication and their systolic blood pressure (SBP) is recorded after 6 months on the assigned treatment. The ANOVA table is as follows (You should be able to figure out values in the numbered cells): Source Between-Group 2376.8 Within-Group 846.2 Total Sum of Squares df Mean...
Exhibit 13-7 The following is part of an ANOVA table, which was the result of three...
Exhibit 13-7 The following is part of an ANOVA table, which was the result of three treatments and a total of 18 observations (6 observations per sample). Source of Variation Sum of Mean F Degrees of Freedom Squares Square Between treatments 64 Within treatments (Error) 96 Total 1) Refer to Exhibit 13-7. The number of degrees of freedom corresponding to between treatments is 2) The number of degrees of freedom corresponding to within treatments is 3) The mean square between...
Question Help 11.1.3 An experiment has a single factor with three groups and two values in...
Question Help 11.1.3 An experiment has a single factor with three groups and two values in each group. In determining the among-group variation, there are 2 degrees of freedom In determining the within-group variation, there are 3 degrees of freedom In determining the total variation, there are 5 degrees of freedom. Also, note that SSA 40, SSW 12, SST-52, MSA 20, MSW 4, and FgTAT 5. Complete parts (a) through (d) Click here to view page 1 of the Ftable...
#16
The test statistic is
a.
6.00.
b.
2.25.
c.
3.00.
d.
2.67.
#17
The mean square due to error (MSE) is
a.
60.
b.
18.
c.
15.
d.
20.
Part of an ANOVA table is shown below. Sum of Degrees Squares Freedom Mean of Source of Variation Square 180 Between Treatments Within Treatments (Error) TOTAL 480 18
5. Identify the following: k (number of groups or samples) N, (number of cases within each group or sample) N (total number of cases) df (between-groups degrees of freedom)= How is it calculated? df (within-groups degrees of freedom) How is it calculated? critical value for F (using the F table) SSB (Sum of Squares Between groups) = ssw (Sum of Squares Within groups) Mean square between= How is it calculated? Mean square within= How is it calculated? F ratio (test...
HW Chapter 8 [Spring 2019] Started: Mar 17 at 7:24pm Quiz Instructions Question 16 1 pts The mean square is: O all of the provided answers D calculated by dividing the sum of squares between by the degrees of freedom between. calculated by dividing the sum of squares within by the degrees of freedom within. is a method for assessing variation in conjunction with the sums of squares measures. Previous Next HW Chapter 8 [Spring 2019] Started: Mar 17 at...
21) Consider the partially completed one-way ANOVA summary table. Degrees of Mean Sum Freedom of Squares Sum of Source Squares Between 330 Within Total 1810 1 16 9 The F-test statistic for this ANOVA procedure is A) 2.33 B) 7.33 C) 5.67 D) 3.67
Question 12 0 pts Suppose a hypertension trial is mounted and 18 participants are randomly assigned to one of the comparison treatments so that each treatment group has 6 participants. Each participant takes the assigned medication and their systolic blood pressure (SBP) is recorded after 6 months on the assigned treatment. The ANOVA table is as follows (You should be able to figure out values in the numbered cells): Source Between-Group 2376.8 Within-Group 846.2 Total Sum of Squares df Mean...
Exhibit 13-7 The following is part of an ANOVA table, which was the result of three treatments and a total of 18 observations (6 observations per sample). Source of Variation Sum of Mean F Degrees of Freedom Squares Square Between treatments 64 Within treatments (Error) 96 Total 1) Refer to Exhibit 13-7. The number of degrees of freedom corresponding to between treatments is 2) The number of degrees of freedom corresponding to within treatments is 3) The mean square between...
Question Help 11.1.3 An experiment has a single factor with three groups and two values in each group. In determining the among-group variation, there are 2 degrees of freedom In determining the within-group variation, there are 3 degrees of freedom In determining the total variation, there are 5 degrees of freedom. Also, note that SSA 40, SSW 12, SST-52, MSA 20, MSW 4, and FgTAT 5. Complete parts (a) through (d) Click here to view page 1 of the Ftable...
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