PSY201H1 Chapter Notes -Null Hypothesis, Binomial Distribution, Sampling Distribution
Document Summary
Chapter twelve: sampling distributions, sampling distribution of the mean, the normal deviate (z) test. Sampling distribution of a statistic gives (1) all the values that the statistic can take and (2) the probability of getting each value under the assumption that it resulted from chance alone. In replicated measures design, used sign test to analyze the data. + statistic calculated was number of pluses in sample of n difference scores. + in marijuana and appetite experiment, obtained 9 pluses and 1 minus result was evaluated using binomial distribution. + binomial distribution with p = 0. 50 lists all possible values of the statistic, number of pluses, along with probability of getting each value under assumption that chance alone produced it. + binomial distribution with p = 0. 50 is the sampling distribution of the statistic used in the sign test . There is a different sampling distribution for each sample size (n)
