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23 Cards in this Set
- Front
- Back
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Variable |
Characteristic of an individual or item |
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Population (universe) |
Collection of all members of a group |
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Sample |
Sub-collection of members selected from a population |
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Parameter |
Numerical measure that describes a characteristic of a population |
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Statistics |
Numerical measure that describes a characteristic of a sample |
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Measures used to describe a population |
Parameters |
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Measures computed from sample data are |
Statistics |
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Descriptive Statistics |
Collecting summarizing and presenting data |
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Collect data |
Survey |
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Present data |
Tables and graphs |
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Characterize data |
Sample mean |
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Inferential Statistics |
Drawing conclusions about a population based on sample data only. |
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Categorical Data |
Marital status, political party, eye color |
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Numerical Discrete Data |
Number of children, defects per hour (counted items) |
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Numerical Continuous Data |
Weight, voltage (measured |
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Ratio data |
Differences between measurements. True zero exists |
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Interval Data |
Differences between measurements but no true zero |
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Ordinal data |
Ordered category (ranking order or scaling) |
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Nominal data |
Categories, no ordering or direction |
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Range |
Variation between lowest and highest score |
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Quartiles |
Separates data into four equal parts |
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Interquartile range is... |
The difference between lower and upper quartile |
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Histograms |
Group numbers into ranges |
