Friday
April 18, 2014

Homework Help: mathematics

Posted by Joan on Tuesday, July 9, 2013 at 7:41am.

Hi, I'm not sure if I'm giving the correct answer for this problem. The question states; The values of computers in the years after its purchase date are listed in the following table. Year 0=1500, Year1=1200, Year2=1100,Year3 +1000, Year 4 = 800, Year 5 =400, Year 6= 200. Givent hat the equation of the regression line between value and year is y = -207.14x + 1507.14 with an R^2 value of 0.9622, how reliable do you think the regression equation is at predicting the future value of a computer in 5 years?

My answer: first I drew a scatter plot, then I got the correlation coefficient which is 0.981. I preidicted strong, negative correlation. I'm just concerned this isn't the correct procedure because the next question asks me to calculate the corrrelation coefficient between year and value which I already did for this question. Any help is greatly appreciated.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Mathematics - 12.07 divided by 0.00897 giving the answer correct to 3 ...
Communication - In response to a compliment on his excellent oral presentation, ...
Pure Mathematics - Find the modulus and principal argument of the complex ...
mathematics - a boat travels 12 km upstream and back in 1 hour and 45 min.if the...
Business Communications - In response to a compliment on his excellent oral ...
Pure Mathematics - The complex number z satisfies the equation z+2iz*=12+9i. ...
science - could someone please crique this algebra x must be the subject 6y = 9...
Mathematics - Among 500 freshmen pursuing a business degree at a university, 313...
Maths - what are the meanings of Mathematics of Buying and Mathematics of ...
probability - out of 250 students interviewed at a community college, 90 were ...

Search
Members