statistics

2. value given as an estimate of a parameter of a population
6. test in which the critical area of a distribution is skewed greater or lesser than a certain value
8. the hypothesis test that there is no significant difference between specified populations
10. defined by sample statistic + margin of error
11. tests whether a sample is greater than or less than a certain range of of values
13. characteristic of a population
14. probability of making a type 1 error
17. involves use of sample data to calculate a single value
19. Hypothesis contrary to null hypothesis; observations are result of real effect
20. cut off values that define where the test statistic is unlikely to lie

1. "probability value"
3. probability of rejecting a null hypothesis when it is actually true
4. hypothesis is rejected even though its true
5. represents how often the true percentage of a population who would pick an answer lies within the confidence interval
7. mean of data
9. indicate whether observed differences between test results occur by sampling error or chance
12. how many percentage points your results will differ from real population value
15. extent to which a distribution is stretched or squeezed
16. describes the type of graph
18. fail to reject hypothesis even though its actually false