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user1205901's questions - English 1answer
204 questions.
Questions
Answers
If I'm not interested in the interaction, is there any reason to run a Two-Way ANOVA instead of two One-Way ANOVAs?
8
2
answers,
2
favourites,
797
views
anova
Is it a reasonable rule of thumb to examine Pearson and Spearman correlations, and use the latter if they are very different?
2
1
answers,
1
favourites,
741
views
correlation
spearman-rho
What are the most important components of an item analysis of a MCQ exam?
1
0
answers,
0
favourites,
359
views
correlation
reliability
item-analysis
When is 'grading on a curve' appropriate?
3
1
answers,
0
favourites,
185
views
normal-distribution
teaching
Cell count distribution assumption in loglinear modelling
1
0
answers,
0
favourites,
85
views
poisson-distribution
multinomial
log-linear
Why is multi-way ANOVA typically taught with reference to interaction terms, whereas multiple regression isn't?
1
1
answers,
1
favourites,
56
views
regression
anova
multiple-regression
interaction
teaching
How does ANCOVA increase the variance explained by the categorical predictor?
1
answers,
0
favourites,
203
views
ancova
sums-of-squares
What's an intuitive way to explain the different types of validity?
4
0
answers,
1
favourites,
107
views
psychometrics
teaching
validity
What's an example of a situation in which it makes sense to assume random slopes but a fixed intercept?
3
2
answers,
0
favourites,
90
views
multilevel-analysis
mixed-model
In ANOVA, if the null hypothesis is true is the expected value of F guaranteed to be 1?
2
3
answers,
0
favourites,
8.546
views
anova
expected-value
assumptions
f-distribution
How should I implement this interaction between a continuous and categorical predictor?
6
1
answers,
1
favourites,
866
views
regression
categorical-data
interaction
centering
When (if ever) is it a good idea to do a post hoc power analysis?
8
2
answers,
0
favourites,
322
views
power-analysis
Are there test statistics for which a larger sample size does not tend to produce a smaller p-value?
2
1
answers,
0
favourites,
56
views
hypothesis-testing
p-value
What's the right interpretation for parameter estimates in loglinear modelling?
3
1
answers,
0
favourites,
3.179
views
categorical-data
generalized-linear-model
log-linear
How can I use this data to calibrate markers with different levels of generosity in grading student papers?
8
2
answers,
1
favourites,
155
views
teaching
inter-rater
Should I be concerned that the correlation between factors changes sharply when I move from EFA to CFA?
0
answers,
0
favourites,
112
views
factor-analysis
latent-variable
confirmatory-factor
Does an underpowered mediation/moderation SEM have an increased chance of Type I error?
3
1
answers,
0
favourites,
155
views
hypothesis-testing
sem
power
mediation
interaction
What impact does a higher $R^2$ have on the precision of the CI?
1
0
answers,
0
favourites,
46
views
regression
confidence-interval
r-squared
What does it mean to explain variance?
15
1
answers,
1
favourites,
1.199
views
multiple-regression
Why does Pearson's r have a non-normal sampling distribution at high values of ρ?
5
1
answers,
1
favourites,
449
views
hypothesis-testing
correlation
Can a statistical test return a p-value of zero?
17
2
answers,
3
favourites,
60.959
views
hypothesis-testing
statistical-significance
p-value
Does the first extracted factor in EFA always have the highest eigenvalue?
1
1
answers,
2
favourites,
84
views
factor-analysis
Why is the df for the χ² test of independence (r − 1)(c − 1)? [duplicate]
1
0
answers,
0
favourites,
15
views
chi-squared
Is the ALRE method of standardization/rescaling appropriate for proportion data?
4
0
answers,
0
favourites,
86
views
forecasting
error
How can I best deal with the effects of markers with differing levels of generosity in grading student papers?
13
5
answers,
5
favourites,
526
views
inter-rater
Problem interpreting the Beta distribution
3
2
answers,
0
favourites,
579
views
bayesian
beta-distribution
How can I work out the standard deviation of a t-distribution?
4
2
answers,
1
favourites,
2.552
views
standard-deviation
degrees-of-freedom
t-distribution
How do MCMC methods allow the estimation of the posterior distribution in this example?
3
1
answers,
4
favourites,
590
views
bayesian
mcmc
posterior
What's an intuitive explanation of the F-distribution's PDF? [closed]
2
1
answers,
1
favourites,
444
views
anova
pdf
f-distribution
Does the actual coverage of a 95% CI on $R^2$ get closer to nominal coverage with larger sample size?
2
1
answers,
0
favourites,
225
views
confidence-interval
multiple-regression
r-squared
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