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Compute the estimated d and r2 to measure

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Reference no: EM132372628

A random sample of n=19 scores is obtained from a population with a mean of µ=80, and a treatment is administered to the sample. After treatment, the sample mean is found to be M=83.5.

a. Assuming the sample variance is 75, compute the estimated d and r2 to measure the size of the treatment effect. Be sure to show all formulas with symbols (and plug in numbers), steps, processes and calculations for all parts of all answers.

b. Assuming the sample variance is 1430, compute the estimated d and r2 to measure the size of the treatment effect. Be sure to show all formulas with symbols (and plug in numbers), steps, processes and calculations for all parts of all answers.

c. Comparing your answers from parts a and b, how does sample variance influence measures of effect size?

Reference no: EM132372628

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