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The average is 86.
The mean, or average is 86
(80 + 86 + x)/3 = 86 166 + x = 258 x = 92
The average of the prime numbers between 80 and 90 is 83.
The median is 86.5
The average is 86.
The mean, or average is 86
(80 + 86 + x)/3 = 86 166 + x = 258 x = 92
The average of the prime numbers between 80 and 90 is 83.
order size 12-18mths 1½-2yrs 2-3yrs 3-4yrs 4-5 yrs height (cm) 80-86 86-92 92-98 98-104104-110
The median is 86.5
86 + 80 = 166
It is: 0.92*86 = 79.12
92 of 80 is 1.15.
(86 + 78 + 92 + x) / 4 = 85 multiply by 4 on both sides of the equation to get.... (86 + 78 + 92 + x) = 340 Collect like terms.... 256 + x = 340 Subtract by 256 on both sides to solve for x .... x = 84
80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99, 100
The idea is to sort the numbers, and pick the number in the middle as the median. In cases like this, when you have two numbers in the middle (the size of the set is even), take the average of those two numbers.