Exploring Random Selection and Effect Size on the Independent Samples t-Test

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Sample Size (n₁ and n₂)

5 and 5 30 and 30 5 and 30 5 and 100

SE Calculation Method

Pooled Variance Non-Pooled Variance

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Sample sizes set to n₁ = 5 and n₂ = 5. SE calculated using pooled variance.

Summary

There are no sample sets to summarize.

Summary statistics for all sample sets
M₁ - M₂	SD₁	SD₂	SE (pooled)	df (pooled)	t (pooled)	p (pooled)	SE (non-pooled)	df (non-pooled)	t (non-pooled)	p (non-pooled)	Sample

Legend: Red dashed = Population mean (μ=24) Green solid = Sample mean

Population (M = 24, SD = 6)

The SWLS is a measure of college students' overall satisfaction in life. The SWLS scores are bounded at 5 and 35. The population (M = 24.0, SD = 6.0) is approximately bell-shaped with a slight negative skew (Mdn = 24.0; IQR = 8.0; skewness = −0.32).

Sample Sets (10, All generated at once)

Click "Draw Samples" to generate 10 sample sets.