Quartile Deviation (QD)The quartile deviation is half the difference between the upper and lower quartiles in a distribution. It is a measure of the spread through the middle half of a distribution. It can be useful because it is not influenced by extremely high or extremely low scores. Quartile Deviation is an ordinal statistic and is most often used in conjunction with the median.why we calculating quartile deviation?
coefficient of quartile deviation is = (q3-q1)/(q3+q1)
yes
(q3-q1)/2
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What is coefficient of quartile deviation?
advantages of quartile deviation
mean deviation =(4/5)quartile deviation
What is mean deviation and why is quartile deviation better than mean deviation?
In a data sample, the purpose of quartile deviation is a way to measure data dispersion instead of using the range. The quartile deviation is found by subtracting the lower quartile from the upper quartile, and dividing this result by two.
coefficient of quartile deviation: (Q3-Q1)/(Q3+Q1)
Quartile Deviation (QD)The quartile deviation is half the difference between the upper and lower quartiles in a distribution. It is a measure of the spread through the middle half of a distribution. It can be useful because it is not influenced by extremely high or extremely low scores. Quartile Deviation is an ordinal statistic and is most often used in conjunction with the median.why we calculating quartile deviation?
coefficient of quartile deviation is = (q3-q1)/(q3+q1)
yes
7,8,9 q.d?
Q3-q1
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