PSYCH 3090 Lecture Notes - Lecture 17: Sampling Distribution, Standard Deviation, Psych
Document Summary
Sampling distribution of the mean: the distribution of sample means is called a sampling distribution of the mean. We can construct a histogram of this distribution of means: statistical simulation in r, some interesting characteristics True regardless of n, , and the shape of the population: the standard deviation of the sampling distribution of the mean is called the standard error of the mean. The sample means vary less when the scores from the population vary less. The sample means vary less as sample size (n) increases. Note that there will be many random sampling distributions of the mean. In previous chapters, we converted a raw score to a z-score: based on what we have learned about sample means and the sampling distribution of the. N mean, we can also convert a sample mean to a z-score. Example 1: assume a normally distributed population with = 70 and = 20.
