Duplicate of Introduction to Statistics

branch of statistics

researcher deliberately applies a treatment before observing the repsonses

likelihood of something happening or being the case

A sample in which each member of the population is assigned a number

no treatment applied

experimenter cannot tell the difference between the effects of different factors on variable

consists of numerical measurements or counts

Count or measure of part of a population

The science of collecting, organizing, analyzing & interpreting data in order to make decisions

numerical description of a SAMPLE characteristic

Treatment applied to part of the population

The process of randomly assigning subjects different treatment groups

added property that a zero entry is an inherent zero

When the population falls into naturally occurring subgroups

experimenter nor the subjects know if the subjects are receiving a treatment or a placebo

Subset, or part of, a population

Consist of attributes, labels or non numerical entries

Involves a sample to draw conclusions about a population

the alteration of behavior by the subjects of a study due to their awareness of being observed

Important for the sample to have members from each segment of the population

refer to ways in which variables/numbers are defined and categorized

Variables that can only take on a finite number of values

implies "none"

All individuals or instances were not equally likely to have been selected

Every member of the population has an equal chance of being selected

Information coming from observations, counts, measurements or responses

Consist only of members of the population that are easy to get

is a quantity that may change within the context of a mathematical problem or experiment

range of numbers between two given numbers

technique where the subjects do not know whether they are receiving a treatment or a placebo

numerical description of a POPULATION characteristic

harmless fake treatment that is made to look like the real treatment

The repetition of an experiment under the same or similar conditions

a variable whose value depends on that of another.

Data arranged in order or ranked

Collection of all outcomes, responses, measurements or counts that are of interest

the entry is not an inherent zero

data categorized using names, labels or qualities

researcher does not influence the responses

A count or measure of an entire population