noun phrase · academic
statistical power
UK/stəˈtɪstɪkəl ˈpaʊə/US/stəˈtɪstɪkəl ˈpaʊər/sta·TIS·ti·cal POW·er
the probability that a study will detect an effect when there is one.
Examples
“Small sample sizes reduce the statistical power of a study.”
“To increase statistical power, researchers often increase the sample size.”
“A power analysis helps decide how many participants are needed.”
Band 8 sentence
“Because the expected effect was small, we performed a power analysis to ensure adequate statistical power before collecting data.”
Collocations
- increase statistical power
- reduce statistical power
Word family
Common mistakes
statistic power→statistical power
power of study→statistical power
Say it for a higher band
5sample size→6reliability→7+statistical power
Synonyms
power (in statistics)
Easily confused
statistical significance
“The results reached statistical significance but the effect size was small.”
Related words
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In Science & Research
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