WEEKLY ASSIGNMENT 7
This week you will find a balance between “mental
math” and SPSS software to help solve the following problems using the five
steps of hypothesis testing. Enter your
answers in the spaces provided. Save the file using your last name as the
beginning of the file name (e.g.,Krieger_SOCI332_Weekly
Assignment 7.doc) and submit via
“Assignments.” When appropriate, show your work. All work should be
typed into this document. Remember to
include your SPSS output data file in your submission.
SPSS
instructions:
Open
SPSS
Analyze
the data for #1. Remember that SPSS assumes that all the scores in a row are
from the same participant. In this study, there are 15 participants divided
into three groups of five. Therefore, each of the 15 participants will be
described by two variables, type of therapy and the number of activities of
daily living performed.
If
“1” represents the group receiving individual therapy for 1 hour every 2 weeks,
“2” represents the group receiving 1 hour of individual therapy each week, and
“3” indicates the group receiving 2 hours of individual therapy each week, the
first participant will be described by entering “1” in the top cell of the
first column in the Data View window and “16” in the top cell of the second column
to indicate that the participant underwent 1 hour of therapy every 2 weeks and
performed 16 activities of daily living. The second participant will be
described by “1” and “15”, and the third by “1” and “18”.
When
the two variables have been entered for the five participants in this group,
repeat the process for participants who underwent 1 hour of individual therapy
each week, using “2” to describe their therapy group. When the two variables
for the five participants in this group have been entered, repeat the process
for Group 3, entering “3” in the first column. In the Variable View window,
change the first variable name to “THERAPY” and the second to “ADL” and set the
decimals for both to zero.
Click
Analyzeà Compare Meansà One-Way ANOVAàSince
“THERAPY” is already selected, you can click the arrow to move the variable to
the Factor window. Select “ADL” and click the arrow to move the variable to the
Dependent List window, which instruct SPSS to conduct the analysis of variance
on the number of activities performed.
Click
“Options” and click the box labeled “Descriptive” to obtain descriptive
statistics.
Click
Continue.
Click
OK.
1.
Keep in mind that the clients in Group 1
will receive 1 hour of therapy every 2 weeks, the clients in Group 2 will receive
1 hour of therapy every week, and the clients in Group 3 will receive 2 hours
of therapy every week.
Use
the five steps of hypothesis testing to determine whether the observed
differences in the number of activities in the following table performed by the
three groups are statistically significant at the .05 level of significance. Clearly
indicate each of the five steps.
Calculate
the effect size for the study. Explain your results.
|
CLIENT |
GROUP 1 |
GROUP 2 |
GROUP 3 |
|
1 |
16 |
21 |
24 |
|
2 |
15 |
20 |
21 |
|
3 |
18 |
17 |
25 |
|
4 |
21 |
23 |
20 |
|
5 |
19 |
19 |
22 |
2.
Describe the circumstances under which
you should use ANOVA instead of t tests, and explain why t tests are
inappropriate in these circumstances.
Submit
the following files to the Drop Box no later than Sunday of Week 7:
ü Word file (this file) saved as [YOUR LAST NAME]_SOCI332_Weekly Assignment 7.doc
ü SPSS output file (.spv) saved as [YOUR LAST NAME]_SPSS-week7_output
The deadline for this assignment is
11:59 PM EST on Sunday of Week 7
