Marbles paired t-test in-class analysis
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Light (g)Heavy (g)
Paired difference
Light (g)Heavy (g)
Paired difference
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5.45.70.3sample size n3838
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5.25.60.4correct22171.470588235
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5.25.60.4incorrect12171.470588235
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5.560.5undecidable42.941176471
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5.660.4sample mean5.30535.45790.1526
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5.55.1-0.4
sample standard deviation sx
0.27800.30100.3847
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5.45.2-0.2p-value0.0193=TTEST(range1,range2,2,1)
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5.55.60.1pooled standard deviation0.2897
=(meanHeavy-meanLight)/standardDeviationLight
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5.75.6-0.1effect size0.52680.2 small effect size
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4.95.80.90.5 medium effect size
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5.45.70.3
sample standard deviation sx
0.27797274650.8 large effect size
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55.40.4p-value0.01932106148
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5.55-0.5pooled standard deviation0.2897244485
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5.55.2-0.3effect size0.5268163586
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5.45.50.1
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4.95.60.7
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5.25.70.5
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4.95.91
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5.65.60
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5.560.5
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5.25.1-0.1
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5.75.4-0.3
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5.45.40
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4.550.5
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5.65.5-0.1
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5.25.50.3
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5.44.9-0.5
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5.65-0.6
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4.95.50.6
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5.55.50
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55.30.3
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5.15.60.5
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5.14.9-0.2
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5.15.40.3
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5.55.50
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5.55.60.1
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5.55.4-0.1
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55.10.1
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Spring2017
Bivariate 1