Stats quiz nine

what are the two types of sampling distributions

1. sampling distributions of sample proportions

2. sampling distributions of sample means

What happens as we take more random samples?

as you take more random samples from the population, the mean of the sample proportions stabilizes and approaches the true population proportion

Name the three graphs

1. Population distribution: distribution from all data

2. Data distribution: distribution of a single sample

3. Sampling distribution of sample proportions: distribution among many samples

What are the two formulas

mean = population proportion

STDEV = sqrt(p(1-p)/(n))

The sampling distribution is bell shaped and symmetrical if

1. np > 15

2. n(1-p) > 15