Flashcards
Confidence Intervals
Cards in this deck (6)
- 1Is the mean of a sample the same as the population mean?No
A sample mean is the best guess of the population mean but is likely to be wrong - 2What are confidence intervals?A range of scores of which the true mean (population mean) is likely to fall between
- 3How do you calculate a confidence interval?CI = M ± 1.96 × S.E.
+ = Upper bound of the CI
- = Lower bound of the CI - 4When calculating CI we use the SE > How is the SE calculated?SE = ?? / (√?)
SD / square root of N - 5What % is CI usually calculated to?95%
The area under the curve covers 95% probability (We can say that 95% of the time, the true population mean will be in the confidence interval) - 6Can you calculate difference CIs?Yes
For 90%: ± 1.645
For 99%: ± 2.576
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- Psychology (PS1813 - Research methods) Flashcards on Confidence Intervals, created by Sian Allen on 27/05/2022.
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- Sian Allen · May 2022
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- May 27, 2022
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