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Worksheetscorrelations
Total questions: 6
Worksheet time: 3mins
True or False: An r value of .004 suggests that there is no association between two variables.
True
False
Between two variables, you found an R2 value of .91. What does this mean?
There is a strong associatioin between variables
There is a strong linear association between variables.
There is a strong, linear, positive association between variables.
The linear model appears to be a good fit to the data.
The linear model is appropriate for the data.
True of False:
r and R2 are mathematically related. You can derive r from taking the square root of R2.
True
False
Between two variables you have an r value of -0.88. What does this mean?
The two variables have a strong, negative, linear association.
The two variables have a strong, positive, linear association.
The two variables are not correlated as the r value is negative
The two variables have a weak, linear association as the r value is negative.
True of False: Causation implies association.
True
False
True or False: Next week is assignment week #3. So there are no classes on Tuesday or Thursday, just extended office hours. Therefore, I will not email Tak to ask if lectures are cancelled.
True
False
