1.

a) 5o) To19. The mean of 10 items of a data is '7' and if each item is increased by '3' then themean isa) 5b) 10c) 15d) 20

Answer»

The mean of 10 items of a data is 7if x is the mean of some observationand it is increased by a"then total mean will be x+aso as it is being increased by 3mean will be(7+3)= (x+a)here x= 7 and a = 3so it will be 10Please like the solution 👍 ✔️



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