 Hi Ian, how are you all today? My name is Priyanka. The question to be discussed is, find the mean salary of 60 workers of a factory from the following table. Now this is the table which is given to us which says that rupees 3000 are earned by 16 workers, 4000 by 12, 5000 by 10 and so on and the total number of workers in the factory are given to us as 60. What we need to find out over here is the mean or the average salary of the worker of a factory. So before proceeding on with the solution we should be well versed with the formula that will be helping us. Here we need to find the mean that is denoted by x bar that is equal to summation that says sum of all the values when i is equal to 1 to n fix i the whole divided by summation i is equal to 1 to n summation of the frequency. Now these two terms will be more clearer to you as I will be proceeding on with the solution and this is the key idea behind this question. So let us proceed on with our solution. Now for the solution we need to make the table given to us in the question again. Now this is the table that I have made here x i represents the observations, f i represents the frequency and now we need to calculate f i into x i that is f i x i. What we will be doing is we will be multiplying 3000 with 16000 and write the answer in front of it. Now here the answer comes out to be 3000 x 16 give us 48000, 4000 x 12 again 48000, 5000 x 10 gives us 50000, 6000 x 8 again gives us 48000, 7000 x 6 gives me 42000, 8000 x 4 gives us 32000, 9000 x 3 is 27000, 10000 x 1 gives us 10000. Now in the formula we need to know two things that is the sum of all the frequency and the sum of f i x i. So what we need to do over here is we will find the sum of f i that will be the total of all the frequency that is given to us in the question as 16 now and now we will add up all these numbers and write down the summation of f i x i and that is 305000 just take care of your calculations. Now write down the formula again that is summation f i x i summation means sum of all the values summation f i that is found to be 305000 divided by 60 that is further equal to 5083.33. So the answer to this session is mean salary that is the average salary of 60 workers is rupees 5083.33. Right this completes my session hope you have a good time and enjoy.