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Wolfgang

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28
How do you calculate the expectation of $\left(\sum_{i=1}^n {X_i} \right)^2$?
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16
What are the ANOVA's benefits over a normal linear model?
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15
Formula for autocorrelation in R vs. Excel
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13
Percentage of overlapping regions of two normal distributions
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12
What is the difference between using aov() and lme() in analyzing a longitudinal dataset?
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11
Can non-random samples be analyzed using standard statistical tests?
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11
Why is the Breusch-Pagan test significant on simulated data designed not to be heteroscedastic?
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10
How to calculate Standard Error of Odds Ratios?
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10
Including the interaction but not the main effects in a model
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10
Does transformation of r into Fisher z benefit a meta-analysis?
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9
James-Stein estimator: How to calculate $\sigma^2$ in shrinkage factor?
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9
Tiny (real) datasets for giving examples in class?
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9
Accommodating entrenched views of p-values
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9
Efficient calculation of matrix inverse in R
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8
How to test if the slopes in the linear model are equal to a fixed value?
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8
Left skewed vs. symmetric distribution observed
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7
Quantile-Quantile Plot with Unknown Distribution?
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7
Proportion of explained variance in a mixed-effects model
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7
Can we compare correlations between groups by comparing regression slopes?
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7
Funnel plot with asymmetrical point sizes
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6
Effect size for interaction effect in pre-post treatment-control design
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6
Weird residuals in linear regression
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5
Statistics interview questions
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5
Regression $R^2$ and correlations
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