Calculating correlation coefficient and r-square
Not what you're looking for?
The estimated regression equation for these data is
y-hat = -137.63 + .1489x
What percentage of the total sum of squares can be accounted for by the estimated regression equation? Comment on the goodness of fit. What is the sample correlation coefficient?
Purchase this Solution
Solution Summary
This solution shows how to find correlation coefficient and r-square (the coefficient of determination) from raw data. We are given the data set that was used find to a simple linear regression model. From that data we find the correlation coefficient and r-square.
Solution Preview
I have attached two files for the solution to this question. One is a Word document with details of the solution. The other is an Excel sheet showing formulas and calculation details for finding the ...
Purchase this Solution
Free BrainMass Quizzes
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.