Question: A longitudinal study would be an unrealistic design under what circumstances? A longitudinal study would be an unrealistic design under what circumstances? The study has

A longitudinal study would be an unrealistic design under what circumstances? A longitudinal study would be an unrealistic design under what circumstances? The study has a short time frame. Subjects must be randomly assigned to groups. The study requires expensive resources. The study has many extraneous variables

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=+10. Here is another part of the regression output for the movies in Exercise 3: Source Sum of Squares df Mean Square F-ratio Regression 224995 3 74998.4 34.8 Residual 249799 116 2153.44

=+a) Using the values from the table, show how the value of R2 could be computed. Dont try to do the calculation, just show what is computed.

=+a) What is the R2 for this regression? What does it mean?