PART 1
Introduction
Sample size and power analysis
Scientific conclusions should not be based only on whether a p-value passes a specific threshold.
Type-1 and Type-2 errors in rejecting or accepting the null hypothesis:
PART 2
Power
How many individuals in a group do you need to do an experiment?
● Power analysis by simulation→ simulating the same experiment 10.000 times and see how many
times a significant result can be found.
● You can also do a power analysis by formal calculation using a t-distribution. There is softwear to do
this.
Introduction
Sample size and power analysis
Scientific conclusions should not be based only on whether a p-value passes a specific threshold.
Type-1 and Type-2 errors in rejecting or accepting the null hypothesis:
PART 2
Power
How many individuals in a group do you need to do an experiment?
● Power analysis by simulation→ simulating the same experiment 10.000 times and see how many
times a significant result can be found.
● You can also do a power analysis by formal calculation using a t-distribution. There is softwear to do
this.
