Flashcards
STAT Chapter 1
Flashcards do conjunto (17)
- 1Population (target population)The entire collection of objects under study
N - 2Sampleany subset of a population
n - 3Random samplea sample selected in a way that all samples of the same size (n) have the same chance of being selected
- 4Representative sampleA sample whose characteristics of interests are very similar to those of the population from which it is drawn
- 5ParameterA fixed (usually unknown) numerical feature of a population
- 6StatisticA numerical quality computed from sample data; often used to estimate the corresponding unknown population parameter
- 7Experimental UnitAn individual member of a population or sample, from which information (data) is collected
- 8VariableA characteristic or property of a member of the population or sample whose value is usually different for different members of the population or sample
- 9Descriptive StatisticsThe display and summarizing of data using graphs and numerical summaries
- 10Inferential StatisticsThe use of sample data to calculate estimates and draw conclusions about the parameters of the population from which the sample was drawn
- 11Data SetA collection of values of one or more variables obtained from the members of the population
- 12Discretedistinct values
result of counting something - 13Continuousresult of measurement
any value in 1 or more intervals
have to worry about accuracy - 14Qualitativenon-numeric value
(can't do math with it) - 15Cross section dataData collected from different members of a population or sample at the same point (or circumstance) in time
- 16Time series dataData collected from a single member of a population or sample at different points in time
(the points are usually equally spread out) - 17measure of reliabilityA statement (usually quantified) about the degree of uncertainty associated with a statistical inference
Informações
- Descrição
- FlashCards sobre STAT Chapter 1, criado por Brianna Nelson em 19-09-2015.
- Criado por
- Brianna Nelson · set 2015
- Atualizado
- 19 fev 2016
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