# Statistical power ## Definition(s) ### Context: [[Nexus - Google Analytics Certificate Course|Google Analytics Certificate]] #### Sub-context >[! Definition] >The probability that a test of significance will recognize an effect that is present ## Examples >[! quote] >"**Statistical power** can be calculated and reported for a completed experiment to comment on the confidence one might have in the conclusions drawn from the results of the study. It can also be used as a tool to estimate the number of observations or sample size required in order to detect an effect in an experiment." ## Related ## Resources [Intro to statistical power + power analysis in Python](https://machinelearningmastery.com/statistical-power-and-power-analysis-in-python/) ## Flashcards The below code are generated for use with [Spaced Repetition plugin](https://github.com/st3v3nmw/obsidian-spaced-repetition/) [docs](https://www.stephenmwangi.com/obsidian-spaced-repetition/) The probability that a test of significance will recognize an effect that is present @@@ [[Statistical power]]