The Mean wage of 200 male reporters in a media industry was RS.150 per day and the mean wage of 130 female reporters was Rs.95 in the same industry. What would be the combine mean of the reporters?
Answers
122.5rs will be the combined mean
Mean wage of 200 male reporters in a media industry = Rs. 150/day
Number of male reporters = 200
We know that Mean = Sum of the observations/Number of the observations
=> Sum of the observations = Mean * Number of observations
So Total sum of wages of male reporters = Mean wage of 200 male reporters in a media industry * Number of male reporters
= 150 * 200
= 30000
Total sum of wages of male reporters = Rs. 30000
Mean wage of 130 female reporters in a media industry = Rs. 95/day
Number of female reporters = 130
We know that Mean = Sum of the observations/Number of the observations
=> Sum of the observations = Mean * Number of observations
So Total sum of wages of female reporters = Mean wage of 130 female reporters in a media industry * Number of female reporters
= 95 * 130
= 12350
Total sum of wages of male reporters = Rs. 12350
Total sum of wages of male and female reporter in a media industry = 30000 + 12350 = Rs. 42350
Total number of reporters in media industry = 200 + 130 = 330
We know that Mean = Sum of the observations/Number of observations
Combine mean = Total sum of wages of male and female reporter in a media industry/Total number of reporters in media industry
= 42350/330
= 128.333.......
So Rs.128.33.... / day would be the combine mean of the reporters.