Mann-Whitney U power assessment
A power analysis allows for the likelihood of an error to be determined. Though the appropriate sample can be gathered and a test may be significant, a power analysis is needed to determine the confidence that can be given to the test results. Assess the Mann-Whitney U test power analysis provided for the likelihood of a Type II error in rejecting the null hypothesis, there is no difference in the number of rounds played in the two versions.
Recall the Mann-Whitney U test assessed the median number of rounds subjects played of a video game, detecting a difference in the two version groups.
Cet exercice fait partie du cours
A/B Testing in R
Instructions
- Determine the probability of a Type II error if the null hypothesis was rejected given our previous power analysis result of
.1138.
Exercice interactif pratique
Essayez cet exercice en complétant cet exemple de code.
# Determine the probability of a Type II error
type_II_error = ___
print(paste0("The probability of a Type II Error is: ", type_II_error))