# biostats Flashcards

a group of methods used to collect, analyze,

present, and interpret data and to make decisions.

statistics

Decisions made by using

statistical methods

Educated guesses

Decisions made without using

statistical or scientific methods

Pure guesses

Statistics has two aspects

: theoretical and applied statistics.

deals with the development, derivation, and

proof of statistical theorems, formulas, rules, and laws.

Mathematical/Theoretical statistics

involves the application of those theorems, formulas, rules, and

laws to solve real-world problems (e.g. economics, psychology, public health).

Applied statistics

What are the types/branches of Statistics?

descriptive statistics and inferential statistics.

consists of methods for organizing,

displaying, and describing data by

using tables, graphs, and summary

measures

DESCRIPTIVE STATISTICS

consists of methods that use sample

results to help make decisions or

predictions about a population from a

sample.

INFERENTIAL STATISTICS

is the branch of applied statistics

directed toward applications in the health sciences and biology.

Statistical Biology/Biostatistics

a specific subject of object (e.g. a

person, a company, a state, or country) about which the information is collected.

element/ member of a sample or population

a characteristic under study that assumes different values of different

elements.

variable.

the value of a variable for an element.

An observation or measurement

a collection of observations on one or more variables

A data set

results when a single variable is measured.

Univariate data

results when two variables are measured.

Bivariate data

the collection of all elements–individuals, items, or objects–whose

characteristics are being studied.

population

results when more than two variables are measured.

Multivariate data