1.1 What is statistics? Flashcards
What is statistics?
The science of collecting, organizing, analyzing, and interpreting data in order to make decisions.
The word statistics is derived from…
the Latin word “status” meaning state.
Who created statistics?
John Graunt by studying mortality rates.
What is data?
Data consists of info coming from observations, counts, measurements, or responses.
Population
The collection of all outcomes, responses, measurements, or counts that are of interest.
Sample
A subset of the populations.
Parameter
A number that describes a population characteristic.
Statistics
A number that describes a sample characteristics.
Descriptive Statistics
Involves organizing, summarizing, and displaying data.
EX tables, charts, averages.
Inferential Statistics
Involves using sample data to draw conclusions about a population.
