Personality and Academic Performance
textbook example
prediction
This post provides details of an example of predicting a quantitative outcome from Lessons Chapter 22 . The example concerns predicting a college student’s overall grade-point average (GPA) from predictor variables that could be available at…
Trade deficits and the Opium Wars
p-values
significance
William Playfair (1759-1823) is credited as the…
A Bayes interpretation of Hypothesis testing
likelihood
prior
posterior
likelihood ratio
odds
The Bayesian paradigm provides a complete framework for…
Lesson 36 take-aways
Class sessions
likelihood
null hypothesis
alternative hypothesis
prior
posterior
p-value
confidence intervals
We are spending this week on a topic…
Named tests from Stat 101
one- and two-sample tests
p-test
t-test
ANOVA
simple regression
A Stat 101 course will cover many…
A bad graph for medical screening
prevalence
sensitivity
specificity
prior
posterior
In Lesson 35, in the context of medical screening tests, we presented diagrams like this one.
Competing two hypotheses
likelihood
prior
posterior
likelihood ratio
odds
The idea of competing two hypotheses …. [UNDER CONSTRUCTION]
Lesson 35 take-aways
Class sessions
hypothesis (definition)
sensitivity/specificity
prevalence
prior
posterior
Define a hypothesis (in a statistical sense) as “a statement that might or might not be true.” This is really just a wordy way of…
Lesson 34 take-aways
Class sessions
classifier
logistic regression
threshold
loss function
false-positive/false-negative
A classifier is a machine that, based on measurements of some sort assigns a categorical level to the object the measurements came from. We can make this less abstract by talking about classifiers in the context of…
Lesson 32 take-aways
Class sessions
experiment
blocking
random assignment
The data analysis techniques we have been using apply equally well…
Lesson 26 take-aways
Class sessions
prediction
probability distribution
bayesian updating
In Lesson 25 we pointed out that the proper form for a prediction is a list of the potential outcomes, each matched to a probability of…
Lesson 25 take-aways
Class sessions
prediction
estimation
intervals
probability distribution
We contrasted the very different tasks of ….
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