Interr association claims

Question 1

Hoe visualiseer je categorische data?

Answer 1

Met een bar chart (scatterplot = matig)

Question 2

Wat is de belangrijkste validiteit voor correlaties?

Answer 2

Construct validity: consider factors that may influence the validity of the variables.

Question 3

Waarom is statistische validiteit relevant voor association claims?

Answer 3

Statistical validity: consider factors that may influence the scatterplot, r, bar graph or difference score that led to association claim. Effect size, correlation, sample size, confidence interval.

Question 4

Richtlijnen effect size sterkte

Answer 4

 .05 = Very small/very weak
 .10 = Small/weak
 .20 = Moderate (difference men/women body weight)
 .30 = Fairly strong (town elevation and annual temperature)
 .40 = Unusually large in psychology (height and weight)

Question 5

Statistisch significante correlatie

Answer 5

Statistically significant correlation: a correlation where it is unlikely to have come from a population where the association is 0 (CI over 0)