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28 Cards in this Set
- Front
- Back
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Statistics |
Data Field of study |
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Statistics |
Study of the collection, presentation, and analysis of data |
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1 identification of sources and data 2 collect 3 present 4 conclusion/analysis |
How to data |
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Probability |
Chance of a particular event to occur |
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Descriptive statistics |
Deals w methods for effective organization and presentation of data |
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Inferential statistics |
Deals w method of producing meaningful inferences from data |
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Population |
Set of all desired subjects |
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Population size |
Number of subjects in a population |
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Sample |
Subset of a population |
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Variable |
Attribute of a subject that is measurable or observable |
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Quantitative variable |
Measurable attribute of a subject |
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Qualitative variable |
Observable attribute of a subject |
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Data |
Values of a variable |
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Discrete variable |
Data can be measured using integers |
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Continuous variable |
Data can only be measure by real number in general |
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Scale of measurement |
Determines the level of algebraic complexity used to measure a variable |
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Nominal |
Data are simply labels or names without ordering Color text gender |
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Ordinal |
Data are labels w ordering No. Of students w poor eating habits Poor fair good |
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Interval |
Data has properties but limited to the integers Pulse rate |
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Ratio |
Data has properties similar to the real numbers Age height |
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Frequency |
Number of occurrence of a data in a sample |
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Descriptive measures |
Quantities describing certain characteristics of a data set |
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Measure of central tendency |
Quantity that describes the location of the center of a data set |
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Mean |
Average of a data set |
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Population mean |
Mean from the data of a population |
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Sample mean |
Mean from the data of a sample |
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Median |
Middle value of a data set |
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Mode |
Most frequently appearing data in the data set |
