Question

What's the predicted number of runs for the player with 149 hits? What's the predicted number of runs for the player with only 86 hits?

Answer 1

@jim_thompson5910

Answer 2

you will use the regression line here

Answer 3

ok cool, how do i do that?

Answer 4

when you did linreg, it shows "y = ax+b" and then it provides the approximate values of a and b. That is your regression line.

Answer 5

http://assets.openstudy.com/updates/attachments/5477faede4b082319a9e1b5a-ineedhelpnowplz-1417150245129-screenshot20141127at10.51.53pm.png

Answer 6

oh ok, let me give u the equation

Answer 7

ok

Answer 8

y= 29.58858896 + 0.3741022738x

Answer 9

that's approximately correct

so what you do is plug x = 149 into that equation to get the predicted y value

Answer 10

y = # of runs, so the output is the predicted run count

Answer 11

oh ok, give me a sec

Answer 12

that looks good

Answer 13

ok so is that the answer?

Answer 14

so about 85 runs (rounding to the nearest whole number)

Answer 15

ok cool thnxs!

Answer 16

do the same for x = 86

Answer 17

ok will do, will u help me in like 10 minutes?

Answer 18

sure I can help

Answer 19

ok cool thnxs be back in 15

Answer 20

alright