Stats help please?

Question

Stats help please?

hockeychick23 · Answer

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hockeychick23 · Answer

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perl · Answer

the residuals show a random pattern

hockeychick23 · Answer

ok thanks i was thinking it was D. because drawing a line wouldn't be accurate

perl · Answer

actually since the positive residuals and the negative residuals balance out, a straight line would be a good model.

perl · Answer

but there isnt much else you can conclude from the graph of residuals

hockeychick23 · Answer

oh, really? i didn't think it would be a good model

perl · Answer

here is an example when the original data is not on a straight line, look at what happens to the residual plot http://prntscr.com/737lsv

hockeychick23 · Answer

ohhh it just went straight through the curve ok that makes sense

perl · Answer

now an example where the original data is on a straight line http://prntscr.com/737m1d

hockeychick23 · Answer

yea that ones points are a lot closer to the line

perl · Answer

here is a better picture http://prntscr.com/737md8

perl · Answer

and here is one that is negatively correlated http://prntscr.com/737mp5

hockeychick23 · Answer

yea that ones points are still pretty central to the line, for mine though it just seemed like the points were spread out a lot more, so would it be accurate to say that a straight line is a good model for a relationship between the variables?

perl · Answer

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perl · Answer

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