There are 4 types of average that are commonly used: Mean, Mode, Median and Range.
The Mean is all values added divided by number of values. In the case 4+10/2 = 7
The Mode is the most frequently occurring value. In this case there is no mode
The Median is the middle value of all of the values. In this case the answer is 7
The range is the highest value minus the smallest value. In this case 10-4 = 6
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a + 4 = 10(a + 4) - 4 = 10 - 4a = 6
mean is the average. so add all the numbers up then divide them by how many numbers it is example. (2+2+2+4) 10/4
-4-x = 10 -x = 10+4 -x = 14 x = -14
4(x- 8) + 10 = -10
The term average (which can also be referred to as the mean) is where you add all of the numbers in a set and divide by how many numbers there are. For example, the average of 2, 3, 5, and 6. First, add all of the numbers. 2+3 = 5 5+5 = 10 10+6 = 16 or... 2+3+5+6 = 16 Lastly, you divide by the amount of numbers in the set. In this example, there are four numbers. Now, you divide by the total by the amount of numbers. 16/4 This equals 4, and you have your average (or mean)!