Lecture 1 Flashcards
What is a population?
All subjects of interest in a particular study
What is a sample?
Subset of the population
What is a parameter?
A descriptive measure of a population.
What is a statistic?
a descriptive measure of a sample
What is a census for?
collecting data for the entire population
What is the sample survey for?
collecting data for a sample
What is descriptive statistics?
Methods for
summarizing the data. Summaries consist of graphs
and numbers
What is inferential statistics?
Methods of making
decisions or predictions about a population based on
data obtained from a sample of that population.
What is a categorical variable?
Where each observation
belongs to one of a set of categories
What is a quantitative variable
Where observations take
numerical values that represent different magnitudes of the variable
