 # General Statistics Questions

## Question

Instructions
For this assignment, you create and compute summary statistics for a dataset provided as a Microsoft Excel file. Import the data into SPSS and then calculate the summary statistics, including the mean, median, mode, range, range, and the standard deviation as instructed below.

Research Scenario
A researcher is interested in the effect of a new medication on serum cholesterol, HDL cholesterol, and glycosylated hemoglobin of adults. The researcher randomly selects a sample of 40 (20 male and 20 female) participants who have been diagnosed with high cholesterol. Assuring equal distribution of males and females, the participants are randomly assigned to one of two conditions (or groups): Following pretest measures of serum cholesterol (CHOL), High density lipoprotein cholesterol (HDL), and glycosylated hemoglobin (GLYHB), the experimental group (group 1) is given the medication for a period of six months while the control group (group 2) is given a placebo. After the six months, CHOL, HDL and GLYHB are again measured.
The post-test data for each participant are provided in the data set “Module 4, 5, and 6 applic assign data_Cholesterol etc” and can be found in the module learning resources. The codebook for the data provided is as follows:
AGE   Age in years
SEX    1 =male, 2=female
GROUP    1 =medication, 2=placebo
CHNG_CHOL    change in cholesterol from pre-test to post-test
HDL    High density lipoprotein at post-test
GLYHB    Glycosylated hemoglobin at post-test
--------------------------------------------------------------------------------

Step 1: Import the Microsoft Excel data file into SPSS or use the correct saved SPSS data file as noted in the instructions, above.
Step 2: Run descriptive/summary statistics (mean, median, mode, standard deviation, and range) for both groups 1 and 2 (medication and placebo), combined for each of the following: AGE, CHNG_CHOL,HDL, and GLYHB (be sure to save your output)
Step 3: Separate the data file by group
Step 4: Run descriptive/summary statistics for each group separately for each of the following: AGE, CHNG_CHOL,HDL, and GLYHB (be sure to save your output)
Step 5: Review your SPSS output and answer each of the following questions
For groups 1 and 2 (medication and placebo) combined:
1. What is the mean for AGE? ________________
2. What is the median for AGE? ________________
3. What is the standard deviation for AGE? ________________
4. What is the mean for CHANGE_CHOL? ________________
5. What is the median for CHANGE_CHOL? ________________
6. What is the standard deviation for
CHANGE_CHOL? ________________
7. What is the mean for HDL? ________________
8. What is the median for HDL? ________________
9. What is the standard deviation for HDL? ________________
10. What is the mean for GLYHB? ________________
11. What is the median for GLYHB? ________________
12. What is the standard deviation GLYHB? ________________
For group 1 (medication) only:
13. What is the mean for CHANGE_CHOL? ________________
14. What is the median for CHANGE_CHOL? ________________
15. What is the standard deviation for
CHANGE_CHOL? ________________
16. What is the range for CHANGE_CHOL? ________________
For group 2 (placebo) only:
17. What is the mean for CHANGE_CHOL? ________________
18. What is the median for CHANGE_CHOL? ________________
19. What is the standard deviation for
CHANGE_CHOL? ________________
20. What is the range for CHANGE_CHOL? ________________
Step 6: Paste all required SPSS output below.

## Solution Preview

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1. What is the mean for AGE? 37.17
2. What is the median for AGE? 37.50
3. What is the standard deviation for AGE? 12.262
4. What is the mean for CHANGE_CHOL? -3.05
5. What is the median for CHANGE_CHOL? -2.00
6. What is the standard deviation for CHANGE_CHOL? 4.006
7. What is the mean for HDL? 45.08...
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