MEAN
the sum of fx (801) divided by the sum of f (frequency) (45)
801/45 = 17.8
CLASS MARK (x/midpoint)
simply just means the middle of the interval
Ex: 26-28
26, 27, 28
CLASS SIZE (i/interval)
number of rows
Ex: 34-36
34, 35, 36 (3 numbers)
i = 3
for the sum (the "Σ"), simply add everything
ex:
f = 2, 4, 3, 1
Σf = 10 (2+4+3+1)
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Answers & Comments
MEAN
the sum of fx (801) divided by the sum of f (frequency) (45)
801/45 = 17.8
CLASS MARK (x/midpoint)
simply just means the middle of the interval
Ex: 26-28
26, 27, 28
CLASS SIZE (i/interval)
number of rows
Ex: 34-36
34, 35, 36 (3 numbers)
i = 3
for the sum (the "Σ"), simply add everything
ex:
f = 2, 4, 3, 1
Σf = 10 (2+4+3+1)
if this helped, please brainliest <3
happy learning!