Find the mean salary of $80$ workers of a factory from the following tables:
Salary (in Rs} Numbers of workers
$5000$ $22$
$6000$ $18$
$7000$ $15$
$8000$ $10$
$9000$ $8$
$10000$ $7$

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Solution

$M e a n = ¯ x = \frac{\sum f i x i}{\sum f i}$
$¯ x = \frac{(5000 \times 22) + (6000 \times 18) + (7000 \times 15) + (8000 \times 10) + (9000 \times 8) + (10000 \times 7)}{80} = 6812.5 P A .$

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Salary (in Rs}	Numbers of workers
$5000$	$22$
$6000$	$18$
$7000$	$15$
$8000$	$10$
$9000$	$8$
$10000$	$7$

Find the mean salary of 80 workers of a factory from the following tables:Salary (in Rs}Numbers of workers50002260001870001580001090008100007

Mean=¯x=∑fixi∑fi¯x=(5000×22)+(6000×18)+(7000×15)+(8000×10)+(9000×8)+(10000×7)80=6812.5 PA.

Find the mean salary of $80$ workers of a factory from the following tables:
Salary (in Rs} Numbers of workers
$5000$ $22$
$6000$ $18$
$7000$ $15$
$8000$ $10$
$9000$ $8$
$10000$ $7$

$M e a n = ¯ x = \frac{\sum f i x i}{\sum f i}$
$¯ x = \frac{(5000 \times 22) + (6000 \times 18) + (7000 \times 15) + (8000 \times 10) + (9000 \times 8) + (10000 \times 7)}{80} = 6812.5 P A .$