Math, asked by Hiii1234, 9 months ago

The following table shows the weight (in kg) of 15 workers in a factory:
Weight (in kg) = 60, 63 ,66,72,75
Number of workers= 4,5,3,1,2

Answers

Answered by dheerajk1912
6

The average weight of 15 workers is 65 kg.

Step-by-step explanation:

         \textrm{Weight} \ \mathbf{(X_{i})}              \textrm{Number of worker} \ \mathbf{(f_i)}          \mathbf{X_{i}\times f_{i}}

         60                            4                                          \mathbf{60\times 4=240}

         63                            5                                          \mathbf{63\times 5=315}

         66                            3                                          \mathbf{66\times 3=198}

         72                             1                                           \mathbf{72\times 1=72}

         75                             2                                          \mathbf{75\times 2=150}

       

                                       \mathbf{\sum f_{i}=15}                               \mathbf{\sum X_{i}\times f_{i}=975}

        We know that formula of

        \mathbf{Mean\ (\bar{X})=\frac{\sum X_{i}\times f_{i}}{\sum f_{i}}}

        \mathbf{Mean\ (\bar{X})=\frac{975}{15}}}

        \mathbf{Mean\ (\bar{X})=\frac{975}{15}}=65 \ kg}

Answered by laxmigupta0082711
1

Answer:

770.2

Step-by-step explanation:

Total number of workers =, 1 + 2 + 3 + 4 + 5

=15

Means =60*4+63*5+66*3+72*1+75*2/15

=240+315+198+72+150/15

=11553/15

=770.2

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