All Questions
4 questions
3
votes
1
answer
596
views
Normal Probability Plot: oscillation around straight line: polynomial relationship?
This is the Normal Probability Plot I've obtained for some data:
As you can see the points seem to osciallate, as in a period, around the line of slope 1 and passing through the origin. I've obtained ...
- 2,286
2
votes
1
answer
2k
views
Partial residual plot with interactions?
The NIST website's description of the partial residual plot says that it plots
$$
\text{Res}+\hat\beta_iX_i\text{ versus } X_i
$$
where
$\text{Res}$ = residuals from the full model
$\hat\beta_i$ = ...
- 161
3
votes
2
answers
1k
views
What is the physical significance of cumulative correlation coefficient?
Say, I have 2 parameters, and based on my dataset, I have iteratively calculated the correlation coefficients between them by taking the correlation of the first i terms, where i ranges from 1 to the ...
- 261
5
votes
1
answer
5k
views
How to estimate the standard deviation of residuals on a residual plot?
So I understand that on the normal histogram and scatter plot, we estimate the standard deviation by looking at the portion which contains $\frac23$ of the data.
In terms of a residual plot from a ...
- 213