A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
Please I really need help
Can someone help me if I type it all out? Posts longer than 2 sentences on here seem to scare people on here, but I will fan and medal.
anonymous
 one year ago
Please I really need help Can someone help me if I type it all out? Posts longer than 2 sentences on here seem to scare people on here, but I will fan and medal.

This Question is Closed

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.0which data?

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.0regression, never tried. But I am good with equations and straight lines I will try

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I am going to type it, I seem to keep scaring people off with my table and work.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm just going to lay it all out okay?

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.0okay.... I will try okay.. I cant guarantee, but I will do my best

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thank you so much it means so much to me. I am so stressed about this

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.0Are you taking x as 'avrge weekly paycheck'?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@peachpi can you help at all?

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.0Rate of change are absolutely correct, ya but the graph...!! hmmm... let me think.....

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the line regression has to be least squares or line of bestfit

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.0@lostinrome Is your cell phone android... I can give you a name of a software which deals with regressions

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm on my laptop right now

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0^ I was just going to ask if this has to be done by hand. Excel does linear regression

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yeah I have to come up with an equation (this whole thing is all on paper)

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.0I graphed it in my mobile, should I send you the screen shot?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm not sure where to even start the linear regression and how I get an equation from it

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.0equation I am getting 1.951402x+1040.6445224

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I haven't done this in years. I'm looking some equations up

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I don't have excel on my laptop so I can't use that

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.0@phi is a very helpful person. He will help once he is online, just keep the question open

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0this is bad I really don't know what to do and I'm like freaking out

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0when does @phi come on usually?

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.0Don't know actually, but he will help. He has helped me a lot in my complicated problems!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Fill in the table. In the third column, square the x values. In the fourth, multiply x and y. Add up the numbers in each column for the box at the bottom dw:1440211191451:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Once we have the table filled in these are the formulas we're going to use to write the line in y = ax + b format dw:1440211851554:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i'm still typing in the table so give me a sec

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440211921215:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay now to write the line in y = ax + b format

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so how do we apply the table to those formulas

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I've seen those formulas before, but have a hard time understanding them.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok so now we're going to use the sums at the bottom of the table. To put each sum in the right place, you just need to pay attention to the x's and y's and their exponents n is the number of points, so \(n = 6\) \[\sum_{i=1}^{6}x_i=96\] \[\sum_{i=1}^{6}y_i=5695\] \[\sum_{i=1}^{6}x^2_i=1606\] \[\sum_{i=1}^{6}x_iy_i=99055\] Putting all that into the equation for a we get \[a=\frac{ 6(99055)(96)(5695) }{ 6(1606)(96)^2 }\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay that makes sense

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0now for b \[b=\frac{ 1 }{ 6 }\left( 5695\frac{ 1587 }{ 14 }(96) \right)\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0At this point you might find it easier to change these to decimals and round to 2 or 3 decimal places

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm having trouble finding the decimal for b

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0b=(1/6)(569510882.29) =(1/6)(5187.29) = 864.55

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0y = 113.35x + 864.55

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what do i do for the x in there?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the x stays. It's part of the equation

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay thought so. Wait was this whole thing in least squares or line of bestfit?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0from excel dw:1440214055244:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay and now for my millionth question, I have to get the slope of this equation we came up with and compare to the rate of change values I did.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm going to try and find the slope.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The slope is the "a" we found 113.36

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh slope of y = 113.35x + 864.55 is 113.36? Okay

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh, ok. it should have been rounded up to 113.36

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes. And for the rates of change you found above, you ended up with the right results, but the equations are backwards. For example the first one should be m= (810  585)/(1513) m = 225/2 m = 112.5

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh one more thing if you don't mind or if @arindameducationusc can pitch in if @peachpi is tired of me lol

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It looks like the x's were years of schooling, so plug in 23 for x in the equation you found and solve for y

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You are awesome. Thank you again!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I want to give you like 50 medals

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yeah that's the right formula. Maybe you just typed them in reverse up top, because you ended up with the right numbers at the end

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yeah looking back I think that's what happened.
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.