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Sol : First 5 multiples of 3 is 3 x 1 = 3 , 3 x 2 = 6 , 3 x 3 = 9 , 3 x 4 = 12 and 3 x 5 = 15.
Number of observations = 5.
Sum of all observations
Mean = ------------------------------------
No. of observations
3 + 6 + 9 + 12 + 15
Mean = ------------------------------
5
45
Mean = ------------------------
5
Mean = 9.
☺☺☺
Sol : First 5 multiples of 3 is 3 x 1 = 3 , 3 x 2 = 6 , 3 x 3 = 9 , 3 x 4 = 12 and 3 x 5 = 15.
Number of observations = 5.
Sum of all observations
Mean = ------------------------------------
No. of observations
3 + 6 + 9 + 12 + 15
Mean = ------------------------------
5
45
Mean = ------------------------
5
Mean = 9.
☺☺☺
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