descriptive statistics
inferential statistics
content analysis
variable
survey
population
sample
random sample
experiment
random assignment
independent variable
dependent variable
measurement
nominal scale
ordinal scale
interval scale
ratio scale
frequency distribution
pie chart
normal distribution
mean
median
mode
range
standard deviation
variance
population distribution
standard error of the mean
statistic
parameter
null hypothesis
significant
power
critical value
two tailed test
one tailed test
sampling error
significance level
validity
reliability
frequency table