Question

Which set of measures are not resistant to extreme values? That is, which summary measures can change dramatically if there is one outlier? [Select all that apply]

Answer 1

ANSWER::

a)

Median:: is based on central value hence does not change a lot with outlier

b)

Mean:: based on all the values, hence affected by outlier

c)

IQR:: based on middle 50% value hence does not change a lot with outlier

d)

Range:: based on min and max, hence affected by outlier

e)

Standard deviation:: based on all the values, hence affected by outlier

f)

Correlation:: based on all the values, hence affected by outlier

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