Quartiles divide a data set into four equal intervals based on the values and their comparison to the overall data set. The intervals are the lower quartile, median quartile, and upper quartile. A decile splits data into 10 equally large subgroups by ranking the data from lowest to highest on a scale of 1 to 10. Centiles, or percentiles, divide data into 100 equal parts with percentiles represented as P1 to P99, where P1 is the value below which 1/100 of the data falls.

1. GROUP 6

2. A quartile is a statistical term that
describes a division of observations into
four defined intervals based on the values
of the data and how they compare to the
entire set of observations. Quartiles are
organized into lower quartiles, median
quartiles, and upper quartiles.

3. 1,2,4,7,8,8,10,14,15
Q1 (25th percentile)=
Q2 (50th percentile)=
Q3 (75th percentile)=

22. A decile is a quantitative method of splitting
up a set of ranked data into 10 equally large
subsections. A decile rank arranges the data
in order from lowest to highest and is done
on a scale of one to 10 where each successive
number corresponds to an increase of 10
percentage points.

23. The formula to
calculate the decile is
as follows: D n = X [ n
10 × ( N + 1 ) ] , where
X is the sorted data
set, n is the decile (in
this case, 6), and N is
the number of data
points (in this case,
6). D 6 = X [ 6 10 × ( 6
+ 1 ) ] = X [ 4.2 ]dy text

25. Centiles is another term for percentiles. Any
given observation is essentially divided into a
total of 100 equal parts by a centile or
percentile. These percentiles or centiles are
represented as P1, P2, P3, P4,……….P99. P1 is a
typical value of peaks for which 1/100 of any
given data is either less than P1 or equal to

26. Formula of
Percentile

27. 1