L6 BONFERRONI T, CONTRASTS, POST-HOC TESTS
Follow up tests need to examine differences among means or sets of means with a priori and posthoc comparisons
Pairwise tests could simply do a series of t-tests but would end up with large familywise error rate
Prevalence of bipolar disorder
Bipolar disorder, which tends to run in families, typically emerges in
adolescence or early adulthood
Prevalence rate is about 1%, with men and women equally affected
One of the few mental disorders associated with higher
> Cant understand that it would have a completely different point of
view
Nonconservation
Failure to recognise that quantities do not change despite change in
appearances
Centration = tendency to centre on one part of the object and ignore the
other par
L5 INTRO TO ANOVA (CONCEPTUAL ONLY)
Doing a series of t-tests to answer a question with multiple IV levels time consuming and inflates
type I error rate
Error rate per comparison probability of Type I error on a given comparison (usually .05)
Familywise e
Coefficient of non-determination k2 = 1-r2 aka error or residual variance in data, amount of
variance that cannot be predicted by the other variable
L10 ALL ABOUT r
Point-biserial correlation used when one variable is dichotomous (like gender) and score o
L9 CHI-SQUARE TESTS OF INDEPENDENCE AND CORRELATION
Chi-square test of independence/contingency chi-square used to determine whether two
categorical variables are related or are independent (e.g. gender and preferred car colour)
Contingency tables the cel
L2 SAMPLING DISTRIBUTIONS, HYPOTHESIS TESTING, SINGLE SAMPLE TESTS
Sampling distributions the dist of a stat that we would expect if we drew an infinite number of
samples (of a given size) from the population, have means and SDs, can have sample dist for
L3 T-TESTS
One-sample tests asking whether the mean of the sample population is the same as the mean
specified in the null (pop mean)
Two-sample tests interesting in comparing two means (repeated measures or independent groups)
Repeated measures null= mew
L8 NON-PARAMETRIC (NP) TESTS (BEGINNING OF EXAM CALC TECHNIQUES)
All of the tests we can covered to the point have involved estimating population parameters,
assumptions about the shape of the data (normally distributed), assumptions about the scaling of
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notes were created for previous semesters and years. Courses are subject to change over time, both in content and scope