Section 2-3 Flashcards

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1
Q

Descriptive statistics

A

The listing and summarizing of data in a practical, efficient way

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2
Q

Frequency distribution

A

An arraignment of data that indicates how often a particular score or observation occurs

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3
Q

Normal curve

A

A graph of frequency distribution shaped like a symmetrical, bell-shaped curve; a graph of normally distributed data

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4
Q

Central tendency

A

A number that describes something about the “average” score of a distribution

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5
Q

Variability

A

A measure of difference, or spread of data

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6
Q

Standard deviation

A

A measure of variability that describes and average distance of every score from the mean

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7
Q

Correlation coefficient

A

Describes the direction and strength of the relationship between two sets of variables

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8
Q

Inferential statistics

A

Numerical methods used to determine whether research data support a hypothesis or whether results were to to chance

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9
Q

Statistics

A

The branch of mathematics concerned with summarizing and making meaningful inferences from collections of data

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