3
Applied statisticians should know
conditional probability inside and out; this is the source of a great deal of misunderstandings about p-values and type I assertion probability $\alpha$ as well as holding back more usage of the Bayesian paradigm
experimental design, sources of bias and variability
measurement properties and how to optimize them
how to ...
1
aov/anova ouputs are not adjusted for multiple comparisons. This is actually a good thing. Comparison adjustments are not always required, and different adjustments are favored in different situations. So the software is leaving the analyst in charge and not making any assumptions on her behalf.
1
Simple effects are defined as the effect of one variable, but restricted only to some level of some other variable. This meaning is used in for instance the R package (on CRAN) phia and discussed in its vignette. Another term which seems to be used with the same meaning is Simple slope.
For a simple illustration, let there be two factors, a and b with ...
answered Jan 15 at 18:57
1
A statistician, as in a Mathematical that is specialized in Statistics, as in my experience, has a basic set of theorical knowledge in:
Probability Theory (most importat one)
Mathematical Inference
Mathematical optimization
Regression
Basic Programming
Exploratory Data Research
Stochastic methods
Keep in mind that, even if it's not as complex as other ...
Only top voted, non community-wiki answers of a minimum length are eligible
Related Tags
anova × 4436r × 979
repeated-measures × 681
regression × 482
hypothesis-testing × 374
t-test × 352
mixed-model × 335
statistical-significance × 290
experiment-design × 229
spss × 215
interaction × 208
multiple-comparisons × 201
post-hoc × 189
variance × 136
lme4-nlme × 132
manova × 130
generalized-linear-model × 122
ancova × 114
nonparametric × 113
heteroscedasticity × 112
multiple-regression × 108
assumptions × 92
kruskal-wallis × 89
normality-assumption × 88
contrasts × 88