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RESEARCH formulas
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Cards (10)
N/2 =
Limit
of
median
class
N =
The sum of the frequencies
Median =
Sum
of
FM
/
N
Range =
HS
-
LS
C.I =
Range
/
divisor given
FM =
Frequency
x
Midpoint
Midpoint = Lowest
range
of interval +
Highest
range
of interval /
N
Mode
=
3Median
-
2Mean
Median
class
is the number closest to the result of N/2. It
cannot
be
Higher
than the result.
Median
= Lower limit of
median class
(
N
/
2
-
F
) i /
f
i =
interval
F =
CF
before
median class f =
frequency
of median class
L =
lower
limit
of median class
