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# Untitled

a guest Jun 13th, 2018 52 Never
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1. library(lsr)
2. pairedSamplesTTest(formula = ~ WB_T2 + WB_T1,
3.        data = prepost)
4.
5. Paired samples t-test
6.
7. Variables:  WB_Avg2 , WB_Avg
8.
9. Descriptive statistics:
10.             WB_Avg2 WB_Avg difference
11.    mean       3.169  3.006      0.162
12.    std dev.   0.468  0.465      0.383
13.
14. Hypotheses:
15.    null:        population means equal for both measurements
16.    alternative: different population means for each measurement
17.
18. Test results:
19.    t-statistic:  4.892
20.    degrees of freedom:  132
21.    p-value:  <.001
22.
23. Other information:
24.    two-sided 95% confidence interval:  [0.097, 0.228]
25.    estimated effect size (Cohen's d):  0.424
26.
27. fit <- lm(WB_Avg ~ WB_Avg2*BF_Conscientiousness, data = prepost)
28. summary(fit)
29.
30. Call:
31. lm(formula = WB_Avg ~ WB_Avg2 * BF_Conscientiousness, data = prepost)
32.
33. Residuals:
34.      Min       1Q   Median       3Q      Max
35. -0.97588 -0.24927 -0.02415  0.23182  0.82299
36.
37. Coefficients:
38.                              Estimate Std. Error t value Pr(>|t|)
39. (Intercept)                  -1.16709    0.85387  -1.367  0.17406
40. WB_Avg2                       1.23733    0.27272   4.537 1.29e-05 ***
41. BF_Conscientiousness          0.62495    0.23760   2.630  0.00957 **
42. WB_Avg2:BF_Conscientiousness -0.17303    0.07442  -2.325  0.02162 *
43. ---
44. Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
45.
46. Residual standard error: 0.3397 on 129 degrees of freedom
47. Multiple R-squared:  0.4788,    Adjusted R-squared:  0.4667
48. F-statistic: 39.51 on 3 and 129 DF,  p-value: < 2.2e-16
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