Bio 155 Study Guide Questions And Answers
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Null hypothesis - ANS there is no relationship between the independent and dependent
variable
- different treatments do not lead to different results
alternative hypothesis - ANS states that there is a relationship between the IV and DV
population - ANS all members of a defined group that are of interest to a particular study
sample - ANS portion of a population that is representative of the population from which it
was selected
standard error of the mean - ANS deviation of sample mean from population mean
- smaller the SEM the more precisely a sample mean estimates the population mean
nominal variable - ANS mutually exclusive categories
example: genotypes, gender
ordinal variable - ANS order matters but not the difference between values
- pain scale, pain level