# Quiz: Measure of variability or dispersion

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3 votes, 5 avg
95 Viability Quiz

Variability describes how far apart data points lie from each other and from the centre of a distribution

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Range, standard deviation, and variance are ‘similar’ in that each looks at

In statistics, an outlier is a data point that differs significantly from other observations.

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Which of the following is the least affected by outliers?

In statistics, an outlier is a data point that differs significantly from other observations.

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Which descriptive statistics would you typically compute for the ordinal variables (e.g., rating on a Likert scale, ranking)?–click all the apply

In statistics, an outlier is a data point that differs significantly from other observations.

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Which descriptive statistics would you typically compute for the nominal variables (e.g., gender, first language)?–click all the apply

In statistics, an outlier is a data point that differs significantly from other observations.

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Which descriptive statistics would you typically compute for the interval variables (e.g., test scores, task completion time)?–click all the apply

Standard deviation is the square root of the variance.

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The standard deviation of a data set is 2, what is the value of the variance?