In Inferential Statistics Random Sampling Is Regarded as Desirable but Not

question 102

True/False

In inferential statistics random sampling is regarded as desirable but not essential.

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Definitions:

Tchebysheff's Theorem

A theorem that provides a bound on the probability that the value of a random variable lies within a certain number of standard deviations of the mean.

Observations

Data collected or noticed during an experiment or study, typically recorded for further analysis.

Percentile

A value below which a certain percent of observations fall, used as a measure to understand the distribution of data in a dataset.

Tchebysheff's Theorem

A theorem stating that for any set of data, the proportion of results within k standard deviations from the mean is at least 1-(1/k^2) for k>1.