10-12 study guide Flashcards
A statement about a population parameter subject to verification
Hypothesis
A procedure based on sample evidence and probability theory to determine whether the hypothesis is a reasonable statement
Hypothesis testing
A statement about the value of a population parameter developed for the purpose of testing
Null Hypothesis
An inference about a population parameter based on sample data when the null hypothesis is rejected
Alternate hypothesis
The probability of observing a sample value as extreme as, or more extreme than, the value observed given the null hypothesis is true
p value
Error when the null is rejected when it should be excepted
Type I error
Error where null is excepted when it should be rejected
Type II error
Distribution for testing variances or several population means simultaneously.
F distribution
Test used when we fail to reject if population variances are equal.
Two sample pooled test
What are the 3 assumptions of a NOVA test
- The populations follow a normal distribution
- The populations have equal standard deviations
- The populations are independent
ANOVA term for different populations being observed
Treatment
The sum of the squared differences between each observation and the overall mean
Total variation
The sum of the squared differences between each treatment mean and the grand or overall mean
Treatment variation
The sum of the squared differences between each observation and its treatment mean
Random Variation
A second treatment variable that when included in the ANOVA analysis will have the effect of reducing the SSE term
Blocking variable
