Question

1.
The daily wages of 80 workers of a factory.

Daily wages (Rs) 500-600 600-700 700-800 800-900 900-1000
Number of Workers 12 17 28 14 9Find the mean dialy wages of the workers of the factory by using an appropriate method.

2 .
Consider the following distribution of daily wages of 50 workers
Te following distribution of daily wages of 50 workers of a factory. (AP - March 2017
Daily wages in (3) 200 - 250 250 - 300 300 - 350 350 - 400 400 - 450
Number of workers | 12 | 14 8 6 1 10.
Find the mean daily wages of the workers of the factory by using an appropriate method.​

Answer 1

Answer:

1)mean =738.75

2)mean =313

Step-by-step explanation:

solution------->

Given

1) as per given informtaion for question no 1

daily wages. number of worker

500-600 12

600 -700 17

700-800 28

800-900 14

900 -1000 9

now for distribution table plzz refere the picture....... now for means

as we know

$mean \: = \frac{fx}{f} \\ \\ \: \: \: \: \: \: \: \: \: \: = \frac{59100}{80} \\ \\ mean \: = 738.75$

2)

as per que 2

daily wages. number of workes

200-250. 12

250-300. 14

300 -350. 8

350 -400. 6

400-450. 10

for distribution table plz refere to picture

now as we knkw

$mean \: = \frac{fx}{f} \\ \\ \: \: \: \: \: \: \: \: = \frac{15650}{50} \\ \\ mean = 313$

Answer 2

Mean 738.75   & Mean = 313

Step-by-step explanation:

Class            Class mean   f       (mean - 750)/100

500 - 600        550           12            -2                  -24

600 - 700        650           17            -1                    -17

700 - 800        750           28            0                     0

800 - 900        850           14            1                      14

900 - 1000       950           9             2                     18

              Total                  80                                    -9

Mean = 750  + 100 (-9)/80

= 750 - 11.25

= 738.75

Class            Class mean   f       (mean - 325)/50

200 - 250        225           12            -2                  -24

250 - 300        275           14            -1                    -14

300 - 350        325           8             0                     0

350 - 400        375           6             1                      6

400 - 450        425           10             2                   20

              Total                  50                                   -12

Mean = 325  + 50 (-12)/50

= 325 - 12

= 313

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