Cross Validated
Marc in the box's user avatar
Marc in the box's user avatar
Marc in the box's user avatar
Marc in the box
  • Member for 11 years, 7 months
  • Last seen more than a month ago
Profile Activity

17 Questions

Score Activity Newest Views
62 votes
4 answers
39k views

Choosing between LM and GLM for a log-transformed response variable

42 votes
1 answer
9k views

How to determine significant principal components using bootstrapping or Monte Carlo approach?

29 votes
4 answers
20k views

How to determine quantiles (isolines?) of a multivariate normal distribution

15 votes
2 answers
6k views

How to test the effect of a grouping variable with a non-linear model?

12 votes
1 answer
3k views

Why are eigen and svd decompositions of a covariance matrix based on sparse data yielding different results?

11 votes
2 answers
5k views

How to calculate the confidence interval of the x-intercept in a linear regression?

7 votes
2 answers
7k views

Does the slope of a regression between observed and predicted values always equal the $R^2$ of the original model?

5 votes
1 answer
11k views

How to add standard error or confidence interval to a plot of a predicted vs observed values?

4 votes
0 answers
3k views

What is the correct way to calculate the explained variance of each EOF as calculated from a gappy data set?

4 votes
0 answers
2k views

How to calculate standard errors of a non-linear model prediction?

4 votes
1 answer
70 views

Permutation using probability versus direct frequencies in R?

3 votes
1 answer
424 views

Given a mean and 95% confidence interval, do I need to know the sample size to calculate the standard deviation?

3 votes
0 answers
2k views

Is there a distribution appropriate for a continuous variable skewed toward zero and able to include zero?

2 votes
0 answers
460 views

Why would gam() and glm() give different results when no spline terms are included?

1 vote
0 answers
52 views

Correction required when autocorrelation stems from the explanatory variable?

1 vote
1 answer
1k views

Can empirical orthogonal function (EOF) analysis be used as a predictive model?

0 votes
0 answers
28 views

How to create a matrix with known number of signals for use in PCA testing

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