Question

8.
Which measure is based on only the central 50% of the observations?
a) Quartile deviation
b) Mean deviation
c) range
d) Standard deviation​

Answer 1

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.

hope it will help you

please mark it as brainliest

and follow me please

Answer 2

ANSWER IS A

because it measure is based on only the central 50%of the observation answer us quartile deviation