Question

find the mean of the following
40,50,65, 70,
following data​

Answer 1

Answer:

Step-by-step explanation: 1 step =mean = sum of all observation / number of observation

2 step = 40+50+65+70 / 4

3 step = 255/ 4 = 63.75

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Answer 2

Mean = sum of all observation ÷ number of observation

mean = 40+50+65+70÷4

mean=225÷4

mean=56.2