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Statistics

- Refers to a set of mathematical procedures for organizing, summarizing, and

interpreting information

Population

- The set of all the individuals of interest in a particular study

Sample

- A set of individuals selected from a population, usually intended to represent the

population in a research study

Variable

- A characteristic or condition that changes or has different values for different

individuals

Data

- (plural) measurement or observations

Data Set

- Collection of measurement or observations

Datum

- (singular) is a single measurement or observation and is commonly called a score or

raw score

Parameter

- A value, usually a numerical value, that describes a sample

- A parameter is usually derived from measurements of the individuals in a population

Statistic

- A value, usually a numerical value, that describes a sample

- A statistic is usually derived from measurements of the individuals in the sample

Descriptive Statistics

- Are statistical procedures used to summarize, organize and simplify data

Inferential Statistics

- Consist of techniques that allow us to study samples and then make generalizations

about the populations from which they are selected

Sampling Error

- The naturally occurring discrepancy, or error, that exists between a sample statistic

and the corresponding population parameter

Correlation Method

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