Sample size for A/B test
We know now that we need to analyze our A/B test results with a t-test after we've collected data. We have two pretty important questions we need to answer before we do that: what's the effect size and what's the sample size required for this test?
In this case, effect size was given to us. Lending Club is looking to detect the relatively small effect size of 0.2. We'll again use the pwr package and calculate sample size using an appropriate function to find out how many we'll need to recruit into each group, A and B.
Questo esercizio fa parte del corso
Experimental Design in R
Istruzioni dell'esercizio
- Use the correct function from the
pwrpackage to calculate the required sample size for each group withd = 0.2, apowerof 0.8, and a 0.05 significance level. Check thepwrhelp docs with?pwrif you need help remembering which function to use and what arguments it takes.
Esercizio pratico interattivo
Prova a risolvere questo esercizio completando il codice di esempio.
# Load the pwr package
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# Use the correct function from pwr to find the sample size
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