Lesson 10 Choice Of Statistical Tests + Lesson 11 Non-Parametric Tests - Chi Squared, Mann Whitney U Test, Wilcoxon, Spearman’s rho Flashcards
What are levels of measurement?
Types of data
What is nominal data?
Data in categories
What is ordinal data?
Rank order and unequal intervals
What is interval data?
Fixed and even intervals
What are the advantages of parametric tests compared to non-parametric tests?
More robust and powerful
Rely on actual data collect than rank order of data
More likely to detect significance
Which three factors mean a parametric test can be conducted?
Interval level of measurement
Normal distribution
E.g. no skewed distribution
Similar variance of data
What does variance of data mean?
Spread of scores
How can the variance of data be examined?
Look at dispersion and standard deviation for both conditions
Which three questions are asked to see which statistical test you should use?
Is it difference, association or correlation?
What is the research design?
What is the level of measurement?
Can you list all the statistical tests in the order they come?
Carrots Should Come
Mashed With Swede
Under Roast Potatoes
Chi squared
Sign test
Chi squared
Mann Whitney U Test
Wilcoxon
Spearman’s rho
Unrelated t-test
Related t-test
Pearson’s r
What is a critical value?
Numerical value found in statistical tables of appendix that help determine significance of results
What does correlation also mean?
Relationship
What does “N” stand for in Spearman’s Rho?
Number of participants
What does “d” stand for in Spearman’s Rho?
Difference
What does “Na” stand for in the Mann Whitney U Test?
Number of participants in SMALLER sample
