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33 Cards in this Set

  • Front
  • Back

Measurements or observations that are usually numeric

Data

A branch of mathematics used to summarize analyze and interpret a group of numbers or observations

Statistics

Summarizes the data or observation

Descriptive statistics

Predictions, estimates, and hypothesis

Inferential statistics

Set of all individuals of interest

Population

A subset of the population

Sample

Characteristic of the population

Population parameter

Quantity computed from a sample of scores

Sample statistic

An example of a mean height

Population parameter

The sample mean is 187 feet tall

Sample statistic

Any characteristic which can have different values

Variables

Any characteristic whose value is fixed

Constant

Take whole number values

Discrete

Take any numerical value

Continuous

Temperature would be an example of

Continuous

The number of students in a class, or the seasons is an example of

Discrete

Name is a category with no logical ordering

Nominal

Names a category with logical ordering

Ordinal

Has no true zero

Interval

Has a true zero

Ratio

Gender would be an example of

Nominal

Temperature would be an example of

Interval

The time it takes to prepare dinner would be an example of

Ratio

Position standing in line would be an example of

Ordinal

Histograms and scatterplots are used to show what kind of data

Continuous

BarGraph, pie chart, and stem and leaf plot can be used to show what kind of data

Discrete

Name three commonly used research methods in behavioral science

Experiments, correlation, in case studies

Which scale of measurement is the most informative

Ratio

a single value which is most representative of a set of data

Central tendency

Used to model uncertainty in branches of mathematics

Probability theory

A quantity that can vary but whose value is not known it advance of the experiment

Random variables

A list of possible outcomes together with the Probabilities of each outcome

Probability distributions

Regardless of original distribution shape, the average of random variables drawn from this distribution will always tend to gaussian.

Central limit theorem