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Published byBraulio Bridgham Modified over 3 years ago

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Analyzing Your Data

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Was my difference caused by random factors?

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Bob’s Data C1T1 00 02 12 13 13 13 24 34 54 65

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Alice’s Data C2T2 12 12 12 23 23 23 23 34 34 34

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Bob’s Data C1T1 00 02 12 13 13 13 24 34 54 65 C2T2 12 12 12 23 23 23 23 34 34 34 Alice’s Data

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Bob’s DataAlice’s Data

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Bob’s DataAlice’s Data C1 Standard Deviation: 2.05 T1 Standard Deviation: 1.41 C2 Standard Deviation: 0.82 T2 Standard Deviation: 0.82 Average Standard Deviation: 1.73 Average Standard Deviation: 0.82

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Bob’s DataAlice’s Data Average Standard Deviation: 1.73 Average Standard Deviation: 0.82 1 / 1.73 =.58 Effect Size =.58 1 / 0.82 = 1.22 Effect Size = 1.22 Effect Size > 1 = GOOD!

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t-Tests

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C1T1 00 02 12 13 13 13 24 34 54 65 C2T2 12 12 12 23 23 23 23 34 34 34 Bob’s DataAlice’s Data http://vassarstats.net/tu.html For Alice’s Data For Bob’s Data

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p = probability that your difference was due to random factors!

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Bob’s DataAlice’s Data http://vassarstats.net/tu.html p =.22.22 >.05 (22% probability that Bob’s results are due to chance) p =.01.01 <.05 (1% probability that Alice’s results are due to chance)

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Thank You & Happy Analyses!

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