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Stats Ch. 1, 2, 3
Question | Answer |
---|---|
Context | Five w's and how |
Data | Recorded values with context, raw (age, weight) |
Data Table | Arrangement of values/data |
Cases | Individual about whom we have data |
Population (of interest) | Cases we want to know about |
Sample | Cases we examine to seek out information about the population of interest |
Statistic | Calculation of data |
Variable | Characteristics recorded about each individual in a sample |
Units | How a variable has been measured |
Categorical/Qualitative Variable | Places an individual into a group, has a label |
Quantitative Variable | Measured variable with units, answers about the quantity of what is measured |
Frequency | Counts for each category |
Relative Frequency | PERCENT of total observations for each category |
Distribution | Describes the possible values of a variable and the relative frequency of each value |
Categorical Data Condition | Data are counts/percents in CATEGORIES before using displays |
Individual Cell | Represents a count for a specific group of individuals in two variables |
Marginal Distribution | Describes the distribution of either the row totals or column totals out of the "total-total" |
Conditional Distribution | Describes the distribution of A row/column out of its own total |
Independence | Two variables are independent when the distribution of one variable is the same for all categories of the other variable |