Arithmetic mean means that you need to add all the numbersand divide the sum by the number of numbers listed in the problem.
Therefore you add 8+12+15+21+11+x= 67 + x
Now you multiply 6 times 17, (because there are 6 numbers in the problem which are 8,12,15,21, and 11)
17x6=102
Now: 67+x=102
Solve for x
67+x=102
-67 -67
---------------
x= 35
9
The mean is 8 because: (1+6+10+11+12)/5=8 We know that the Arithmetic Mean of a data set = (sum of all the items)/ number of items. =(1+6+10+11+12)/5 =(40)/5 =8. The Arithmetic Mean of 1, 6, 10, 11, and 12 is 8.
The average mean is: (11+12+13+14+15)/5 = 13
If you mean: 8 9 10 11 and 12 then the average mean is 10
30
9
The mean of those data points is 9.
The mean is 8 because: (1+6+10+11+12)/5=8 We know that the Arithmetic Mean of a data set = (sum of all the items)/ number of items. =(1+6+10+11+12)/5 =(40)/5 =8. The Arithmetic Mean of 1, 6, 10, 11, and 12 is 8.
The average mean is: (11+12+13+14+15)/5 = 13
If you mean: 8 9 10 11 and 12 then the average mean is 10
x + 5x + 6x = 12x. There are 3 terms. If the arithmetic mean is 8 then 12x = 3 x 8 = 24 : So, x = 24 ÷ 12 = 2.
12 + 23 + 14 + 11 = 60/4 = 15 The average is therefore 15.
30
using mod 12 arithmetic, 11x3 = 9 mod 12
median = 11.5 mean = 12
Median of the set = arithmetic mean of 8 and 9 = 8.5
To find the average, or the arithmetic mean, you add up all the numbers and divide the sum by the number of numbers. So, for example, the average of 6, 7, 9, 12 is (6+7+9+12)/4 =34/4 = 8.5