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Exercise

Fisher's Exact test analysis

The Fisher's Exact test is similar to the Chi-Square test of independence but is more fitting for smaller sample sizes.

You assessed gamedata where in each of the two game versions, whether the subject returned to the game after seven days was recorded as TRUE or FALSE. This same assessment is of interest with subjects who completed many rounds of the game, leaving 800 subjects in the analysis, 400 in each version condition.

Since the total number of subjects has been reduced to under 1000, a Fisher's Exact test is more fitting. Determine whether the subjects returning to the game after seven days is related to the version groups.

The data set of subjects completing over 545 rounds of the game has been loaded for you as subgame. The pwr package has also been loaded.

Instructions

100 XP
  • Create a frequency table called freqtbl of the version and retention_7 of the subgame dataset and run a Fisher's Exact test.