Homework 1
Name _____________________________________
There are two data files in the HW1 Folder, one is in SPSS form and it is: QLDiab.savand the other is the same data file in Excel format: QLDiab.xlsxif you want to use a program other than SPSS. The data in these files is for a measure of Quality of Life of subjects with Type Ii diabetes. It has three variables: the QoL measure, time having diabetes as a category, and gender.
This data set will be used for both HW1 and HW2.
For HW1 to focus will be on graphics and for HW2 the focus will be on numerics. You will need to cut and past output into this form.
Let’s look at parts of the data file variable view:
- Does it appear the Measure label is correct? Why do you feel this way?
- Conduct frequency distribution and bar graph for the Gender variable.
Post the Frequency Distribution for Gender here:
Post the Bar Graph for Gender here:
Complete this table:
| Gender | f | % |
| Male | ||
| Female |
- Conduct frequency distribution and histogram for the Time category.
Post the frequency distribution here:
Post the histogram here:
Complete this table:
| Time having Diabetes | f | % | Cf | C% |
| Less than 5 years | ||||
| 5 to 10 years | ||||
| More than 1 years |
- For the Quality of Life Measure:
Post a stem and leaf plot here:
Complete the following table:
| Quality of Life Score | f | % | Cf | C% |
| 8-9 | ||||
| 10-11 | ||||
| 12-13 | ||||
| 14-15 | ||||
| 16-17 | ||||
| 18-19 | ||||
| 20-21 | ||||
| 22-23 | ||||
| 24-25 | ||||
| 26-27 | ||||
| 28-29 | ||||
| 30-31 | ||||
| 32-33 | ||||
| 34-35 | ||||
| 36-37 |
Post a histogram here with a normal distribution included:
Post a boxplot here:
Are there any outliers? ___________________
About what would be the value for the median? ____________
About what would be the value of Q1? ____________
About what would be the value of Q3? _____________
- Post a boxplot of the Quality of Life Score by Time variable:
Which group has the highest Quality of Life Score? ______________
Which group has the lowest Quality of Life Score? ______________
Discuss the outliers for the groups that have them: