For a repeatedmeasures study comparing two treatments with a

For a repeated-measures study comparing two treatments with a sample of n = 9 participants, the difference scores have a mean of M_D = 4.90 with SS = 72. What is the estimated standard error for the sample mean difference?

Mean difference = 4.9

Therefore,

Sum of differences, sum(D) = 4.9*9 = 44.1

Standard Error = sqrt([sum(D²) - sum(D)²/n]/n(n-1))

sqrt((72 - (44.1²/9))/(9*8))
= 1.41 Answer

For a repeated-measures study comparing two treatments with a sample of n = 9 participants, the difference scores have a mean of MD = 4.90 with SS = 72. What is

For a repeatedmeasures study comparing two treatments with a

Solution

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