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Example data from Kruschke (2013) used to compare the quantitative means of two groups using Null-Hypothesis Significance Testing and Bayesian Estimation

Usage

best

Format

best

A data frame with 89 rows and 2 columns:

group

Factor with levels 'drug' or 'placebo'

y

Observed outcome of the IQ test for an individual

Details

Outcomes from two groups of people who take an IQ test. Group 1 (N1 = 47) consumes a "smart drug" and Group 2 (N2 = 42) is a control group that consumes a placebo

The data was simulated randomly from t distributions, in order to generate some outliers.

References

John K. Kruschke, Journal of Experimental Psychology: General, 2013, v.142(2), pp.573-603. (doi: 10.1037/a0029146)