Word Problems: Correlation #1

As a political pollster, you wonder if there is a relationship between what people paid for their car and their annual salary (in $10,000). Consider the following data:

Salary        Car Cost
    1                   2
    2                   5
  14                 17
    9                 10
    7                   6
    3                   4

What is the sum of Salary: _________
What is the SS of Salary: __________
The sample variance of Salary is: ____
What is the mean of Car Cost: ______
What is the SS of Car Cost: ________
Since you are interested in commonality, which of the following tests should you perform:

a. t-test
b. ANOVA
c. correlation
d. regression
e. multiple regression

Perform the comparison you selected in the item above. Select only the appropriate one(s). What was the result of your calculation?

a =

b =

r =

t =

F =

What is the coefficient of determination for this data?

Answers

NOW YOU CHOOSE:
    Day 5: Correlation
    Bit More About Correlation
    Even More About Correlation
    Calculate Correlation
    Practice Problems
    More Practice Problems
    Word Problems
        Sim1            Sim2             Sim3
        Sim4            Sim5             Sim6
        Sim7            Sim8             Sim9
    Basic Facts About Correlation
    Vocabulary
    Formulas
    Quiz 5
    Summary