8.
Which measure is based on only the central 50% of the observations?
a) Quartile deviation
b) Mean deviation
c) range
d) Standard deviation
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8.
Which measure is based on only the central 50% of the observations?
a) Quartile deviation
b) Mean deviation
c) range
d) Standard deviation
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Step-by-step explanation:
Formally, the Quartile Deviation is equal to the half of the Inter-Quartile Range and thus we can write it as – Q d = Q 3 – Q 1 2 Q_d = \frac{Q_3 – Q_1}{2} Qd=2Q3–Q1 Therefore, we also call it the Semi Inter-Quartile Range. The Quartile Deviation doesn't take into account the extreme points of the distribution.
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ANSWER IS A
because it measure is based on only the central 50%of the observation answer us quartile deviation