Model Summary S R-sq R-sq(adj) 3.75497 84.14% 82.70% Analysis of Variance Source DF SS MS F P Regression 1 822.915 822.915 58.36 0.000 Error 11 155.098 14.100     Total 12 978.012       What is the Correlation Coefficient? And what does the Correlation Coefficient tell you about the direction and strength of the relationship between these variables?  Using the P value or the critical values for the Pearson coefficient Critical Values Table for Pearson Coefficient is there enough evidence to support a relationship at the 5% level of significance (α = .05) for these variables?  Explain how you arrived at your answer. d. Using the result for the Correlation Coefficient compute the Coefficient of Determination (r-squared).  Interpret this value…what information does this give us concerning Age and Annual Salaries?

MATLAB: An Introduction with Applications
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ISBN:9781119256830
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Model Summary

S R-sq R-sq(adj)
3.75497 84.14% 82.70%

Analysis of Variance

Source DF SS MS F P
Regression 1 822.915 822.915 58.36 0.000
Error 11 155.098 14.100    
Total 12 978.012      
    1. What is the Correlation Coefficient? And what does the Correlation Coefficient tell you about the direction and strength of the relationship between these variables?
    2.  Using the P value or the critical values for the Pearson coefficient Critical Values Table for Pearson Coefficient is there enough evidence to support a relationship at the 5% level of significance (α = .05) for these variables?  Explain how you arrived at your answer.
    3. d. Using the result for the Correlation Coefficient compute the Coefficient of Determination (r-squared).  Interpret this value…what information does this give us concerning Age and Annual Salaries?
Expert Solution
Step 1

The coefficient of correlation between any two variables, is a measure of association between the variables. Its value lies between -1 and 1 (including 1 and -1).

If the two variables are strongly correlated, then the value of coefficient of correlation is close to ±1 and if the two variables are not at all correlated, then the value of coefficient of correlation is close to 0.

The coefficient of determination represents the percentage of variability in the sampled values of dependent variable that can be explained on the basis of independent variable.

 

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