Question

What is the mean of 6 7 8 9 10 11 12 and 13

Answer 1

Answer:

Mean of the above expression is 9.5, the mean can be found by using two formulas :-

Sum of Observations ÷ No. of Observations and Sum of the first observation and the last observation ÷ 2

Step-by-step explanation:

1st Way :-

Mean = Sum of observations ÷ No. of Observations

Mean = (6+7+8+9+10+11+12+13) ÷ 8

Mean = 76 ÷ 8

Mean = 76/8

Mean = 38/4

Mean = 19/2

Mean = 9.5

2nd Way :-

Mean = Sum of the first observation and last observation ÷ 2

So, First Ob. = 6

Second Ob. = 13

Mean = (6 + 13) ÷ 2

Mean = 19 ÷ 2

Mean = 9.5