All Questions
6 questions
2
votes
0
answers
42
views
Interpretation of plots (PCA, Volcano)
I'd like to ask if somebody can help me to understand these plots, the meaning of dots dispersion on the plots. I can't understand how to read these plots.
Link to the article https://www.ncbi.nlm.nih....
- 21
4
votes
1
answer
138
views
How to interpret the representation of data in principal plane?
I have the data X contains the grades of some students in 4 subjects:
...
- 433
1
vote
0
answers
15
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Use historical data to build surface with limited number of points [closed]
Lets say I have historical surfaces of data which vary slightly during time, but keeps similiar dynamics.
I would like to use these historical data sets to estimate todays surface (given a limited ...
0
votes
0
answers
70
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Visualizing and interpreting principal components [duplicate]
I have performed principal component analysis (PCA) in Matlab via
[U,S,V] = svd(X)
Now I have to show the principal directions of the considered principal ...
- 393
7
votes
0
answers
3k
views
Interpretation of biplot in PCA
Blue points all appear in the lower right-hand quadrant in the plane formed by the first two principal components.
Is it a good interpretation of the biplot (right panel) to say that blue points are ...
- 2,237
37
votes
2
answers
90k
views
Interpretation of biplots in principal components analysis
I came across this nice tutorial: A Handbook of Statistical Analyses Using R. Chapter 13. Principal Component Analysis: The
Olympic Heptathlon on how to do PCA in R language. I don't understand the ...
- 2,799