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April 20, 2014

April 20, 2014

Posted by **Tracy** on Friday, June 28, 2013 at 8:08am.

x 1 1 3 3 5 5 7 7 9 9

y 3 2 6 1 3 3 3 2 5 3

(a) Find the equation of the line of best fit.

y hat = 2.6,.1x Correct: Your answer is correct. . + Correct: Your answer is correct. . x

(b) Find the ordinates y hat for the points on the line of best fit whose abscissas are x = 1, 3, 5, 7, and 9.

1 . .

3 . .

5 . .

7 . .

9 . .

(c) Find the value of e for each of the points above (e = y - y hat).

y e y e

3 . . 3

2 3

6 2

1 5

3 3

- Math -
**Anonymous**, Friday, June 28, 2013 at 3:40pmyhat = 3x

- Math -
**Tracy**, Friday, June 28, 2013 at 3:48pmI got the first part the answers were 2.6 and .1x, I can not figure out the rest of it B & C.

- Math -
**Kuai**, Friday, June 28, 2013 at 3:57pmThere are some of rule you have to follow for particular abscissa.

(2, 4, 6, 8, 10), the abscissa is the half the ordinate

Rule: x = (1/2)y

y = 2x

(1,2 3,4,5): the abscissa is two less than the ordinate.

Rule: y-2 =x

y = x + 2

(1,3,5,7,9), the abscissa is one third of the ordinate.

Rule: x = (1/3)y

y = 3x

(0,1, 2, 3.....,10), abscissa

Rule: y-1 = 2x

y = 2x +1

- Math -
**Kuai**, Friday, June 28, 2013 at 4:09pmb) yhat = 3x

- Math -
**Tracy**, Saturday, June 29, 2013 at 10:16amSo on B I got the answers, 0.5, 1.5,

2.5,3.5,4.5

And everything that I have tried on C is coming up wrong????

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