92
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Sum = 678 Count = 8 So Average = Sum/Count = 678/8 = 84.75
86-87: 83.3% 87-88: 87.7% 88-89: 90.1% 89-90: 88.8% 90-91: 95.2% 91-92: 94.7% 92-93: 94.8% 93-94: 88.8% 94-95: 91.4% 95-96: 100% 96-97: 90.6% 97-98: 84.5% That's an average of 90.4%
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.
82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
618/7 = 88.28571429% or 88% correct to 2 significant figures.