If I understand it correctly, that means you should solve the following equation:
(5 + 9 + 12 + x) / 4 = 9
The mean of a set of data is also known as the average. To get the average, add all the numbers in a data set up, then take away the number of numbers. eg. data set = 5,6,7,6,6,4,4,3,4,5,4,6. Added = 60 Number of numbers = 12 60/12 = 5 = Average
To find the average of a set of numbers, you add all the numbers together and then divide by the total number of values. In this case, the sum of 18, 12, 13, and 17 is 60. Since there are 4 numbers in the set, you divide 60 by 4 to find the average, which is 15.
To find the average of a set of numbers, you add all the numbers together and then divide by the total number of values. In this case, the sum of 8, 9, 10, 11, and 12 is 50. To find the average, you divide 50 by the total number of values, which is 5. Therefore, the average of 8, 9, 10, 11, and 12 is 10.
3
234
23
The Answer is 26
The mean of a set of data is also known as the average. To get the average, add all the numbers in a data set up, then take away the number of numbers. eg. data set = 5,6,7,6,6,4,4,3,4,5,4,6. Added = 60 Number of numbers = 12 60/12 = 5 = Average
This missing number is 5
12
The answer depends on where, within the sequence, the missing number should have been.
55
30
To find the average of a set of numbers, you add all the numbers together and then divide by the total number of values. In this case, the sum of 18, 12, 13, and 17 is 60. Since there are 4 numbers in the set, you divide 60 by 4 to find the average, which is 15.
23
672
No both sexes have 24 ribs (a set of 12). A very small amount of people have 22 or 26 ribs, (en extra set, or a missing set) at birth.