Statistics Ch 1
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11 terms
Terms | Definitions |
|---|---|
 Descriptive Statistics | Numerical, graphical, and tabular methods for organizing and summarizing data |
| Population | The entire collection of individuals or measurements about which information is desired |
| Sample | A part of the population selected for study |
| Categorical Data | Non-numerical individual observations |
| Numerical Data | Quantitative individual observations |
| Discrete Numerical Data | Possible values are isolated points on the number line |
| Continuous Numerical Data | Possible values form an entire interval on the number line |
| Bivariate Data | Each observation consists of two or more responses or values |
| Frequency Distribution | A table that displays frequencies, and sometimes relative frequencies, for each of the possible values of a categorical variable |
| Bar Chart | A graph of a frequency distribution for a categorical data set. Each category is represented by a bar, and the area of the bar is proportional to the corresponding frequency or relative frequency. |
| Dotplot | A picture of numerical data in which each observation is represented by a dot on or above a horizontal measurement scale. |
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