If - fi xi - 20 and - fi - 4- what is the mean of the data-

The correct option is A 15 σ fixi=20 and σ fi=4 Hence, Mean =σ fiσ fixi=420=15 Hence Option A is correct ...

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Assumed Mean Method

If σ fi ...

Question

If $σ$ $f_{i}$ $x_{i}$ = 20 and $σ$ $f_{i}$ = 4, what is the mean of the data.

\frac{1}{5}

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80

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16

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5

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Solution

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Similar questions

7

a + b

$x_{i}$	4	6	7	9
$f_{i}$	$a$	4	$b$	5

:

$X_{i}$	$0 - 5$	$5 - 10$	$10 - 15$	$15 - 20$
$f_{i}$	$2$	$4$	$2$	$2$

2.6

$x_{i}$	$1$	$2$	$3$	$4$	$5$
$f_{i}$	$5$	$4$	$f$	$2$	$3$

Find the mean of the following data.

X_{i - 11 12 13 14 15 16 17 18}

_{Fi - 10 1 3 4 8 10 3 1}

_{All of Fi are corresponding to Xi}

$X_{i}$	6	10	14	18	24	28	30
$f_{i}$	2	4	7	12	8	4	3

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