# Word Problems: Correlation #9

You sell ice cream. You wonder if there is a relationship between flavors. To see if people who buy your chocolate ice cream also buy your mocha ice cream , you collect the following data from a sample of your customers (# of pints purchased).

Chocolate Mocha

10 10

10 4

4 5

9 7

10 1

2 2

What is the SS for Chocolate: ______

What is the range for Chocolate: ______

What is the SS for Mocha: ______

What is the SSxy: ______

Since you are interested in the relationship between two dependent variables, 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 calculations?

a =

b =

r =

t =

F =

Is this statistic significant (.05 alpha, 2-tailed):

Calculate the coefficient of determination:

NOW YOU CHOOSE:

Day 5: Correlation

Bit More About Correlation

Even More About Correlation

Calculate Correlation

Practice Problems

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Sim4 Sim5 Sim6

Sim7 Sim8 Sim9

Basic Facts About Correlation

Vocabulary

Formulas

Quiz 5

Summary

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