In the Description stage, what is the dif between using a population vs using a sample?
Population:
-accurate
-usually too expensive
-usually takes too long
-usually bigger than needed
sample:
-usually contains error
-can be affordable
-can take little time
-can be just the right size
What are the 3 steps of the Central limit theory?
1- theoretically, a large sample of any descriptive statistic will be normally distributed.
2- theoretically, the mean of this distribution is the population descriptive statistic
3- if a sample descriptive statistic is close to the mean of this theoretical distribution, there is a good chance it is the population descriptive statistic.
What is statistical significance?
The amount of risk a researcher takes when deciding to accept or reject the null hypothesis
OR
The probability that a researcher will reject the null hypothesis when it is actually true.