anonymous
  • anonymous
Linear Regression - Suspected Typo?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
Posted this to StackExchange but got no answers but I'm hoping someone here will be able to take a look: http://math.stackexchange.com/questions/1561458/linear-regression-questions-suspected-typo Replying here is fine, I just didn't want to retype the whole lot.
amistre64
  • amistre64
the slope of the line from an online calculator for the regression is: -205.29046991994 which is what you got i believe ... so id go with typo.
anonymous
  • anonymous
Thanks, just checking I wasn't going mad. Any idea about the last question?

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amistre64
  • amistre64
youre 'corrections' were not complete
amistre64
  • amistre64
consider the point slope form of the linear regression line: y = m(x-avgX) + avgY such that the y intercept is: -m*avgX + avgY i believe you adjusted the value of m, but did not consider how it affects the overall line outcome.
amistre64
  • amistre64
when i correct for it, using their typoed slope 4836.2623-x/(.004781)=4900 ... i get x=-.30473
anonymous
  • anonymous
Oh thank you, that explains it. Also, someone replied to me on StackExchange explaining that it wasn't at typo and was due to the fact they modelled it differently.
amistre64
  • amistre64
ah, i was wondering a little why you did 1/m for the ELR. I spose we should have had a better definition of what ELR ... temp with respect to altitude would have given us a function whose independant variable was altitude, not temperature.

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