The
most common way to report relative standing of a number within a data set is by
using percentiles.The word percentile
comes from the Latin words per centum which means “per hundred”
v
showing relative standing in a
distribution
v
showing what percentage of scores are higher
and lower than a certain score.
v
Percentile computation
cf
P(percentile) =
(100) -----
N
N= number of scores
Cf =cumulative frequency
Cf 16
v P= (100)----- =
(100)------ = 80
N 20
Cf 20
v P = (100)-----= (100) ------ = 100
N 20
A percentile is any of 99 values which divide a sorted data set
into 100 equal parts, so that each part represents 1/100 of the data set.If
70% of the population is shorter than you, then your height is said to be at
the 70th percentile. Percentiles are generally used with large sets
of data so that dividing it up into 100 equal parts seems realistic.
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any suggestion on my side