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17 Cards in this Set
- Front
- Back
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Statistics |
The science of conducting studies to collect, organize, summaries, and draw conclusions from data. |
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Descriptive |
The collection, organization, summarization and presentation of data |
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Inferential |
Generallising from samples to,populations estimating hypothesis testing determining relationships, making predictions. Uses probability |
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Variable |
Characteristic or attribute that can assume different values. Ex color of coats, kinds of cars, speed of car, type of home |
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Datum |
Singular |
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Data set |
Collection of data |
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Population |
All subjects being studied |
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Sample |
A subset of the population. |
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Types of variables |
Qualitative, quantitative, discrete, continuous, ordinal |
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Qualitative |
Plates into distinct categories. No specific order. Ex. Eye color |
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Quantitative |
Numerical Can be ordered Ex. Speed of car, income |
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Discrete |
Countable data Ex. Count people in a room- basketball scores |
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Continuous |
Measurable data Ex, weight loss, speed of car |
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Ordinal |
Categories in an order Ex. Freshman...senior- shirt size xs s m... |
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Boundaries of a number |
A class in which a data value would be placed before the data value was rounded. Written for convenience used for continuous variables. Ex lengths 15cm - 14.5-15.5cm |
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Surveys |
Way of collecting data Phone, mail, online, personal interview, records |
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4 basic methods of sampling |
Random, systematic, stratified, cluster |
