1.

Following are the marks in a class assessment.4 6 7 5 3 5 4 5 2 6 2 5 1 9 6 5 8 4 6 7 Find the arithmetic mean.​

Answer»

Arithmetic MEAN = SUM of observations/No. of Observations

                 

= 4+6+7+5+3+5+4+5+2+6+2+5+1+9+6+5+8+4+6+7 / 20

= 100/20

= 5

           

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