Create an excel worksheet and populate it, in columns, with values of X that are -2,...

Create an excel worksheet and populate it, in columns, with values of X that are -2, -1, 0, 1, 2 and values of Y that are -1, 1,1,1,3. As an aside, note that the sample mean of X is 0. Create the columns shown below, and enter the proper formulas into excel.

					(X minus	(X minus mean)
					Mean)	times (Y
	Y	Y-mean	X	X-mean	squared	minus mean)	Y-hat	u-hat
	-1		-2
	1		-1
	1		0
	1		1
	3		2

sum
sum*1/n

B1-hat =
B0-hat =

Expert Solution

				(X minus	(X minus mean)
					Mean)	times (Y
	Y	Y-mean	X	X-mean	squared	minus mean)	Y-hat	u-hat	(x-mean)(y-mean)
	-1	-2	-2	-2	4	4			4
	1	0	-1	-1	1	0			0
	1	0	0	0	0	0			0
	1	0	1	1	1	0			0
	3	2	2	2	4	4			4

sum	5	0	0	0	10	8	1	0	8
sum*1/n	1	0	0	0	2	1.6

B1-hat =	0.8
B0-hat =	1

Formulas used are:

milcah answered 3 months ago

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