Biostats
Card Set Information
Author:
JVu
ID:
132087
Filename:
Biostats
Updated:
2012-01-31 20:01:26
Tags:
M2 scco
Folders:
Description:
M2
Show Answers:
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 ___
large > 30
small < 30
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