Word Problems: Correlation #3

November 3, 2008 by  
Filed under Word Prob

As a governor, you are interested in how similar are the patterns of serving in the state legislature and being rich. You have measured every representative on both variables, and now hope to find how related these two variables are. The numbers below represent the number of years in the legislature and net worth (in billions) of each member.

Years       Net Worth
     5               2
   11             14
     8               5
   10             16
     5             13
     3               8
     1               5

What is the sum of Years: _______
What is the SS of Years: _______
What is the variance of Years: _______
What is the mean of Net Worth: _______
What is the SS of Net Worth: _______
Since you are interested in commonality, which of the following tests should you perform:

a. t-test
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 =

Is there a significant relationship between Years & Net Worth at the .05 alpha level?
Check r against the Critical Values of Pearosn r table






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
    Quiz 5



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