
Descriptive statistics
 used for describing the pic of your data
 determining whether data are normally distributed
 describing the relationship with clinical normality

inferential statistics
 used for making inferences about a characteristic or a value based on a sample
 used to draw conclusions about a population by using a sample
 hypothesis testing:
 used to test an assumption or ascertain a "truth" about a population using a sample and some test statistics

Large sample sizes are ____ measurements or patients
Small sample sizes are ___

parameters
numerical descriptive measures of a population
p for p

statistics
numerical descriptive measures of a sample
s for s
 cannot calculate parameters, but can calc statistics to estimate population parameters

POINT estimation
 a single value (p or mean) to estimate the paramter of interest
 "p" proportion of a population with a condition, dz, or characteristic based on the proportion in the sample
 mean value: x bar of a clinical test, biological measure, or characteristic based on the mean value in the sample

INTERVAL estimation
compute 2 numbers from sample data and use interval formed by two #s as an interval estimate of the parameter of interest

the ______ proportion "p" is an estimate of the _____ proportion "pi"
 sample proportion
 population proportion

