Correlation and Regression
Create a correlation table for the variables in our data set. (Use analysis ToolPak or StatPlus:mac LE function Correlation.)
Reviewing the data levels from week 1, what variables can be used in a P
Week 1. Measurement and Description - chapters 1 and 2
Measurement issues. Data, even numerically coded variables, can be one of 4 levels nominal, ordinal, interval, or ratio. It is important to identify which level a variable is, as
Testing means - T-tests
In questions 2 and 3, be sure to include the null and alternate hypotheses you will be testing.
In the first 3 questions use alpha = 0.05 in making your decisions on rejecting or not rejecting the null hyp
ANOVA and Paired T-test
At this point we know the following about male and female salaries.
Male and female overall average salaries are not equal in the population.
Male and female overall average compas are equal in the population, but
Confidence Intervals and Chi Square (Chs 11 - 12)
For questions 3 and 4 below, be sure to list the null and alternate hypothesis statements. Use .05 for your significance level in making your decisions.
For full credit, you need to