M/A/R/C Research Statistical Calculator Further Specific Assumptions:
Independentgroups test of 2 percentages:
1. The responses arise from binomial distributions.2. The two samples are independent of one another.
3. n1*p1 > 5, n1*(1p1) > 5, n2*p2 > 5, and n2*(1p2) > 5.
Independentgroups test of 2 means:
1. The responses arise from approximately normal distributions.2. The two samples are independent of one another.
3. The 2 variances are unknown and assumed equal.
Margin of error and sample size n calculations:
1. The responses arise from a binomial distribution.2. The estimated proportion = 50%.
3. n*p > 5 and n*(1p) > 5.



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