Statistics 5.0 / 5 based on 1 rating ? StatisticsFormulas - etcA2/A-levelAQA Created by: Ashleigh BodenCreated on: 06-03-15 10:01 P(A) the probability that A happens 1 of 12 P(A’) the probability that A does not happen 2 of 12 (AᴖB) the probability that both A and B happen 3 of 12 (AᴗB) the probability that either A or B or both happen 4 of 12 P(A l B) the probability that A happens, given that B has happened 5 of 12 A and B are independent if you can show: - P(AᴖB) = P(A) x P(B) 6 of 12 A and B are mutually exclusive if you can show: - P(AᴖB) = 0 7 of 12 x̅ sample mean 8 of 12 µ population mean 9 of 12 s sample standard deviation 10 of 12 σ population standard deviation 11 of 12 population standard deviation x ̅= (∑▒x)/n (unbiased estimator for σ) 12 of 12
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