Given that Carrefour's net revenue was 1200, 1500, 1850. and 1700 for the first 4 months of a year and The median of Carrefour's monthly revenues for the first 5 months was 1550. And we need to find What was the average of monthly revenues for the first 5 months of a year?

Since there are 5 terms and median = 1550 => middle term or the 3rd term = 1550
So, the series is 1200, 1500, 1550, 1700, 1850

Method 1: Mean formula

=> Mean = \(\frac{Sum}{5}\) = \(\frac{1200 + 1500 + 1550 + 1700 + 1850}{5}\) = 1560

Method 2: Distance from middle term

Mean = Middle Term + (Distance of each term from middle term / 5) = 1550 + \(\frac{(1200 - 1550) + (1500 - 1550) + (1550 - 1550) + ( 1700 - 1550) + (1850 - 1550) }{ 5}\)
= 1550 + \(\frac{-350 -50 + 0 + 150 + 300}{5}\) = 1550 + \(\frac{50}{5}\) = 1550 + 10 = 1560

So, Answer will be 1560
Hope it helps!

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