Question 818820: X 4 5 6 7 9
Y 4 8 9 12 17
Determine hat y= ?x+(?)
Round to three decimal place
Answer by Edwin McCravy(20056)   (Show Source):
You can put this solution on YOUR website! That asks,
"What is the equation of the line that comes the closest
to passing through these 5 points? (The regression line)
(4,4), (5,8), (6,9), (7,12), and (9,17)
On your TI-83 or 84
press ON
press CLEAR
press STAT
press 1
in L1 enter 4,5,6,7,9 and in L2 enter 4,8,9,12,17
press STAT
press the right arrow key once to highlight CALC
press 4
press ENTER
read
y=ax+b
a=2.5
b=-5.5
rē=.9840425532
r=.9919891901
Answer: y=2.5x-5.5 The 5 points and the regression line are drawn below:
Edwin
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