Flashcards
Statistical terms
Cards in this deck (15)
- 1meanthe average.
add all numbers together and divide by number of inputs - 2medianthe middle.
order numbers highest to lowest and find exact middle. if even number of inputs, add middle 2 numbers together and divide by 2 - 3modemost often occurring number
- 4sample variance (S^2)average of squared differences from the mean.
add all numbers and square, divide by #
square all numbers and add
subtract #1 from #2
divide this number by number of inputs -1 - 5descriptive statisticscollecting and describing data
- 6inferential statisticsdrawing conclusions concerning a population based only on sample data:
estimations and hypothesis testing - 7populationthe collection of things under consideration
- 8samplea portion of the population selected for analysis
- 9parametersummary measure computed to describe a characteristic of the population - mean
- 10statisticsummary measure computed to describe a characteristic of the sample
- 11variablea characteristic of an item or individual
- 12datathe information gathered about the sample or population. different values are associated with the variable
- 13Data Source: Primarydata collection - observation; survey; experimentation
- 14Data Source: Secondarydata compilation - print or electronic.
- 15—
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- QM161 Statistics Flashcards on Statistical terms, created by Jenna Ward on 30/10/2020.
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- Jenna Ward
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