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brandonw998
 one year ago
Help with regression lines
brandonw998
 one year ago
Help with regression lines

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brandonw998
 one year ago
Best ResponseYou've already chosen the best response.1I can't figure out how to get the Predicted cost part

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1how did you find 0.08 in that last box?

brandonw998
 one year ago
Best ResponseYou've already chosen the best response.1I have done the question like 6 times and it's always 0.08

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1what kind of calculator do you have?

brandonw998
 one year ago
Best ResponseYou've already chosen the best response.1I enter in the data in L1 and L2 but can never get the answer they get

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1idk what the CE means, but I have a TI84 plus, so I guess that works

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1so you have your data into L1 and L2 did you do a LinReg ?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1ok it should say something like ax+b or a+bx and then spit out what a and b are

brandonw998
 one year ago
Best ResponseYou've already chosen the best response.1b=467.213 but the answer is always between like 164 to 166

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1hmm let me try, one sec

brandonw998
 one year ago
Best ResponseYou've already chosen the best response.1I guess what's the predicted cost when the miles is at 0.08?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1ok I'm getting 0.08 now

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1and I'm not getting a number between 164 and 167 but I'm getting pretty close to it

brandonw998
 one year ago
Best ResponseYou've already chosen the best response.1How did you get 0.08?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1well I got 0.07877 approx which rounds to 0.08

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1yeah using that function

brandonw998
 one year ago
Best ResponseYou've already chosen the best response.1I don't see it in mine :(

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1it's in the calc menu after you hit the stat key

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1btw make sure your "miles" is in the L1 column

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1if you put "miles" in the L2 column, you'll have to type in `LinReg(ax+b) L2,L1`

brandonw998
 one year ago
Best ResponseYou've already chosen the best response.1Ohh really? I've been putting it in L2 that must be the problem

brandonw998
 one year ago
Best ResponseYou've already chosen the best response.1Why must the miles go first?

brandonw998
 one year ago
Best ResponseYou've already chosen the best response.1Now I got it a=0.07877

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1because the equation is cost = ____ + ____ * (miles) miles is the input

brandonw998
 one year ago
Best ResponseYou've already chosen the best response.1Oh I see so I was doing it backwards

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1well they put the columns in the wrong order (probably to throw you off)

brandonw998
 one year ago
Best ResponseYou've already chosen the best response.1So Predicted cost should be 162.96?

brandonw998
 one year ago
Best ResponseYou've already chosen the best response.1I actually have to do this problem again since I already restarted it

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1no that value goes in the missing box

brandonw998
 one year ago
Best ResponseYou've already chosen the best response.1Thanks man! I guess I was getting it wrong because I was entering in L1 and L2 backwards. I have been so confused for over an hour. Thank you!

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1yeah I made the same mistake but swapping the columns or entering `LinReg(ax+b) L2,L1` addresses the issue
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