Statistics regression : Predict the value for Y by ClassOf1

VIEWS: 53 PAGES: 3

More Info
									              Sub: Statistics                                                                               Topic: Regression



              Question:
              Predict the value for Y for the given X.

         ClassOf1 provides expert guidance to College, Graduate, and High school students on homework and assignment problems in
                       Math, Sciences, Finance, Marketing, Statistics, Economics, Engineering, and many other subjects.

              A sociologist is interested in relation between x = number of jobs and y= annual salary (in
              thousands of dollars) for people who live in the Nashville area. A random sample of 10 people
              employed in Nashville provided the following information:



              X (Number of 4                7      5       6          1         5           9          10     10        3
              job changes)

              Y (Salary in $      33        37     34      32         32        38          43         37     40        33
              1000)



                x = 60; y = 359; x = 13,013; xy = 2231

              (d) If someone had x=2 job changes, what does the least squares line predict for y, the annual
              salary?



              Solution:
                      S.No.                 X              Y              X*X        Y*Y          X*Y
                        1                   4              33              16        1089         132
                  
								
To top