Analyzing Your Data

1. Analyzing Your Data

2. Was my difference caused by random factors?

3. Bob’s Data

4. Alice’s Data

5. Alice’s Data Bob’s Data

6. Alice’s Data Bob’s Data

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

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

9. t-Tests

10. Alice’s Data http://vassarstats.net/tu.html Bob’s Data For Bob’s Data For Alice’s Data

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

12. Alice’s Data http://vassarstats.net/tu.html Bob’s Data 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)

13. Thank You&Happy Analyses!