BASIC STATISTICAL MEASURES
1. The following data were collected from 10 individuals:
|
Age
|
Number of past jobs
|
Current job status
|
Income
|
|
25
|
1
|
employed
|
30,000
|
|
34
|
2
|
unemployed
|
40,000
|
|
29
|
2
|
employed
|
40,200
|
|
38
|
2
|
unemployed
|
45,000
|
|
44
|
1
|
employed
|
52,000
|
|
49
|
4
|
unemployed
|
25,000
|
|
55
|
4
|
employed
|
80,000
|
|
23
|
3
|
unemployed
|
120,000
|
|
44
|
2
|
employed
|
120,000
|
|
44
|
3
|
unemployed
|
38,000
|
1. Calculate the mean, median, and mode for "Age" (with SPSS).
2. Calculate measures of dispersion for "Age" (with SPSS).
3. Calculate Skewness and Kurtosis for "Income" (with SPSS). Is this variable skewed? If so, what kind of skew?
4. Prepare a frequency distribution for the data of "number of past jobs." Plot it (bar chart).
5. Given the provided income distribution (and assuming normality), what would be the z-score for someone who earns $40,000/year? $100,000/year?