The following table has observations for 6 employees. Suppose that: X: The age in years. Y: The salary in hundreds. Use
Posted: Sun Sep 05, 2021 5:05 pm
- The Following Table Has Observations For 6 Employees Suppose That X The Age In Years Y The Salary In Hundreds Use 1 (40.52 KiB) Viewed 102 times
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The following table has observations for 6 employees. Suppose that: X: The age in years. Y: The salary in hundreds. Use the following table to answer the question below. Given that: Mean of X=31 and standard deviation Sx=4 Mean of Y=14 and standard deviation Sy= 5 Х Y 31 11 28 10 36 17 26 12 23 7 40 25 1. Find the correlation coefficient (r). Determine the direction and strength of the relationship?
1. Find the correlation coefficient (r). Determine the direction and strength of the relationship? 2. Find the Coefficient of determination. Explain the result is it a useful model)? 3. Compute and draw Regression line model. 4. Compute the mean absolute error for this regression model. 5. Compute the residuals and draw a scatter plot of the residuals for this data on the regression line model. Is it a good model? 6. If an employee salary was 21 hundreds what is the expected age for him/her?