Describe the residual plot used in the question including the following- definition of a residual, labeling of axes in a residual plot, how to actually make the plot, conclusions drawn from a residual plot.

Question

Describe the residual plot used in the question including the following- definition of a residual,  labeling of axes in a residual plot, how to actually make the plot, conclusions drawn from a residual plot.

anonymous · Answer

This was the question- Jensen appears to be growing slowly as a toddler. His height between 18 and 30 months of age increases as follows:

..Age.....Observed...Predicted.. Residual
(months) Height(cm) Height(cm)
18.......... 76.5.......... 76.566......-0.066
21.......... 78.7.......... 79.077......-0.377
24.......... 81.588...... 81.176...... 0.412
27.......... 84.8.......... 84.099......-0.701
30.......... 86............. 86.61........-0.61 

The least-squares regression line is Height= 61.5+0.837 times age

amistre64 · Answer

residual is the unexplained portion between the lsr and the actual value

but i dont see an actual question in any of the information

amistre64 · Answer

http://stattrek.com/regression/residual-analysis.aspx that will prolly do better than i can recall at the moment

amistre64 · Answer

a random scattering of residuals indicates a good linear correlation;  otherwise a different type of regression would be better suited