Tell us a question you need . Given the following table: Current Length of Emplo

Question

Tell us a question you need

. Given the following table:

Current Length of Employment (Years)

Number of Workdays Absent

6

3

8

5

11

6

5

6

2

7

3

7

2

10

Develop and state an estimate (predictor) equation for ? given X. You can calculate the a and b constants using any method, manual, Excel, Regression analysis, etc.

Based on the estimate equation in part a, what is the estimated number of workdays absent given a worker who has been employed for 4 years?

Determine the correlation coefficient.

Determine the coefficient of determination.

help with

Current Length of Employment (Years)

Number of Workdays Absent

6

3

8

5

11

6

5

6

2

7

3

7

2

10

Explanation / Answer

(1) Number of Workdays Absent = 8.1335-0.3496*Current Length of Employment (Years)

where a=8.1335

b=0.3496

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(2)8.1335-0.3496*4=6.7351

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(3) correlation coefficient = -0.5481

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(4) coefficient of determination =0.3004

Regression output confidence interval variables coefficients std. error    t (df=5) p-value 95% lower 95% upper Intercept 8.1335 1.4623 5.562 .0026 4.3745 11.8925 Current Length of Employment (Years) -0.3496 0.2386 -1.465 .2027 -0.9628 0.2637

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