Answer:
Quartiles: distribution is divided into quarters.
Quintiles: distribution is divided into fifths.
Deciles: distribution is divided into tenths.
Percentile: distribution is divided into hundredths.
Example:
Calculate Quartile-1, Deciles-3, Percentiles-20 from the following data
3,13,11,11,5,4,2
Solution:
Arranging Observations in the ascending order, We get : 2,3,4,5,11,11,13
Here, n=7
Q1= (n+1)th value of the observation
——
4
=(8)th value of the observation
–
4
=2nd value of the observation
=3
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