86
Place the values in ascending order: 76, 81, 89, 91, 97, 99. There are 2 middle numbers; 89 & 91. The median is the mean of the 2 middle numbers; or (89+91)/2 or 90.
91.57
The mean of any set of numbers is the sum of those numbers divided by how many numbers there are. Here, the sum is 99+97+91+89+81+76=533. When you divide 533 by 6 (the total number of numbers), you get 88.83333... repeating forever. In mixed number form, this is 88 and 5/6.
(79, 81, 82, 91, 93, 95, 95) The mean is 88 The mode is 95 The median is 91
To find the median of a set of numbers, you first need to arrange them in numerical order. Once you have them in order, the median is the middle number. If there is an odd number of values, the median is the middle number. If there is an even number of values, the median is the average of the two middle numbers. In this case, the numbers arranged in numerical order are: 78, 81, 82, 88, 88, 88, 89, 91, 91, 92, 93, 94, 95, 96, 98. Since there are 15 numbers, the median will be the 8th number, which is 89.
83.7
That's an infinite list. 81, 83, 85, 87, 89, 91 and so on.
Mean = (88 + 85 + 91)/3 = 264/3 = 88
84.75 is the mean of 88, 91, 74 and 86.
82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
no parts for a 89 go thru years 88 thru 91
86