Correct option is D
Ans. (d)
Sol.
Standard deviation is a
measure of spread or dispersion in a data set, not a measure of central tendency. It indicates the extent to which data points deviate from the mean. On the other hand,
mean,
median, and
mode are all measures of
central tendency, which describe the center or typical value in a data set.
Explanation of each option:
·
(a) Median – A
measure of central tendency that represents the middle value in a data set when arranged in ascending order.
·
(b) Mode – A
measure of central tendency that represents the most frequent value in a data set.
·
(c) Mean – The
arithmetic average of all values in a data set, a
measure of central tendency.
·
(d) Standard deviation –
Correct answer. It is not a measure of central tendency but a
measure of variability or spread in a data set.
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