Find the mean of the following data:- a) 40, 50, 65, 70, 75. b) 76, 68, 84, 69, 78.
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mean- list of numbers should be added and divided by no. of numbers
A. = 40+ 50+ 65+ 70+ 75/ 5
= 300/5
= 268
B. = 76+ 68+ 84+ 69+ 78/ 5
= 375/ 5
= 312.6
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