SPSS assignment
Danyah
stat__assignment_6.docxSTAT 509 Assignment# 6 Name_______________________
Instructions:
1) Due Date
· May 18 @ 11:50pm
2) Assignment submission:
· When you submit an electronic file (assignment) you must use the following format: This is for: LAST NAME (in upper case), your first name, the course code, activity/assignment number and file format
· For example: SMITHJohn-STAT509-A1.doc
Assignment: (Show your work)
1. Use the ANOVA table below to answer the following questions:
· How many groups are being compared? (1 point)
· What is the F critical value at an alpha of 0.05? (1 point)
· What is the F-value? (1 point)
· What is your decision in comparing the group means? (1 point)
|
Source |
Sum of Squares |
Degrees of freedom |
Mean of squares |
F-value |
|
Between group variation |
103.3 |
2 |
|
|
|
Within group variation |
72.0 |
12 |
|
|
2. Three samples were selected from three different populations. Use the information shown below to answer the following questions:
· What is the overall mean (grand mean) for all the groups? (2 points)
· What is the critical F value? (1 point)
· At α=0.05, can one conclude that there is a significant difference in the means. Use the test statistics method to answer this question. (3 points)
