If the average is 10 then 15 is 5 above average.
Average(5, 10, 15) = (5 + 10 + 15)/3 = 30/3 = 10
5 + 10 = 15. To take the average, add all the units to be averaged, then divide that number by the number of units, in this case, 2. So, 15/2 = 7-1/2 or simply, 7.5.
10 + 10 + 10 + 10 + 15 + 15 + 0 = 7070/7 = 10Average = 10
You cannot. It should be their weighted average with the weights representing the number of observations in each average.For example, if 3 numbers have an average of 10 and 6 numbers have an average of 20, the combined average is not the average of 10 and 20 (which is 15).It is, in fact, (3*10 + 6*20)/(3 + 6) = (30+120)/9 = 150/9 = 16.66...You cannot. It should be their weighted average with the weights representing the number of observations in each average.For example, if 3 numbers have an average of 10 and 6 numbers have an average of 20, the combined average is not the average of 10 and 20 (which is 15).It is, in fact, (3*10 + 6*20)/(3 + 6) = (30+120)/9 = 150/9 = 16.66...You cannot. It should be their weighted average with the weights representing the number of observations in each average.For example, if 3 numbers have an average of 10 and 6 numbers have an average of 20, the combined average is not the average of 10 and 20 (which is 15).It is, in fact, (3*10 + 6*20)/(3 + 6) = (30+120)/9 = 150/9 = 16.66...You cannot. It should be their weighted average with the weights representing the number of observations in each average.For example, if 3 numbers have an average of 10 and 6 numbers have an average of 20, the combined average is not the average of 10 and 20 (which is 15).It is, in fact, (3*10 + 6*20)/(3 + 6) = (30+120)/9 = 150/9 = 16.66...
Well, honey, if you wanna find the number smack dab in the middle of -5 and 15, you just average those two bad boys. So, (-5 + 15) / 2 = 5. There you have it, sweet cheeks, 5 is the magic number that's halfway between those two extremes.
5+5 = 10 10+5 = 15 15-5 = 15 10+5 = 15
15
15
Average = 12
15. 5 - -10 = 5 + 10 = 15 → 15 + -10 = 15 - 10 = 5
It is: 12.5
The Next NumberThe next number is 25 if you use the following pattern: 5, (the number 10), 15 (the first number +10), (the number 10), and the next number is the third number +10 or 25.or you could think of it this way:5, 10 (+5), 15 (+5), -5 (10)The pattern is +5, +5, -5, so the next number would be 15, the next 20, and the next 15.