# Unit 5: inference and explanation stage

 The flashcards below were created by user xiongashely on FreezingBlue Flashcards. 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. significance level: p< .05 p = probabilitiy Authorxiongashely ID252935 Card SetUnit 5: inference and explanation stage Descriptioninference Updated2013-12-13T04:33:05Z Show Answers