Statistical Tests
The test used to examine the relationship between two numeric variables.
What is correlation?
The hypothesis assumes no effect or difference
What is null hypothesis?
SSbetween + SSwithin equals this.
What is SStotal?
The value of 0.05 used to determine statistical significance.
What is p-value?
(n-1) * (n-1)
What is df?
The test used to compare the means of three or more groups.
What is one-way ANOVA?
The hypothesis assumes the significant difference above and beyond chance
What is alternative hypothesis?
MSEbetween/MSEwithin
What is one-way ANOVA (F test)?
Unlike t-test, the hypothesis test is used when population sd is known.
What is z-test?
alpha criterion/number of pairwise comparisons
What is Bonferroni correction?
The test used to compared means of the same group at two different time points.
What is a Repeated Measured t-test?
State Hypotheses > Collect data > Evaluate Evidence > Draw Conclusion
What are the Steps for Hypothesis Testing?
(Row Total * Column Total) / Grand Total
What is expected value (Chi-square test of Independence)?
Finding a minimal sample size for the study required to reject H0 when H0 is false
What is power analysis?
Questionable research practice testing hypotheses until a desirable p-value is found.
What is p-hacking?
The test used to compare observed and expected frequencies.
What is Chi-square test?
The conclusion error made when one fails to reject H0 when H0 is false.
What is Type II error?
sum((Oi - Ei)^2 / Ei)
What is Chi-square test statistics?
Measures of r, r2, or Cohen's D can be used to evaluate this.
What are effect sizes?
Researchers come up with the hypotheses/stories after data are analyzed.
What is HARKing (hypothesizing after results are known)?
The test compares the mean of a single sample to a known population mean to determine a statistically significant difference.
What is one-sample t-test?
The conclusion error made when one rejects H0 when H0 is true.
What is Type I error?
What is Repeated measures t-test?
Standardized difference between two groups
What is Cohen's d?
Registering the hypotheses and analyses in advance to reduce research bias
What is pre-registration?