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Stats Chapter 2
vocab
Question | Answer |
---|---|
context | tells WHO was measured, WHAT was measured, HOW the data were collected, WHERE the data were collected, and WHEN and WHY the study was performed |
data | systematically recorded information, whether numbers or labels, together with its context |
data table | an arrangement of data in which each row represents a case and each column represents a variable |
case | an individual about whom or which we have data |
population | all the cases we wish we knew about |
sample | the cases we actually examine in seeking to understand the much larger population |
variable | holds information about the same characteristic for many cases |
units | a quantity or amount adopted as a standard of measurement; dollars, hours, grams |
categorical variable | a variable that names categories (whether with words or numerals) |
quantitative variable | a variable in which the numbers act as numerical values, HAS UNITS |