78 x 88 = 624 + 6,240 = 6,864
78+88/2=166/2=8383
1/2 (78 + 88) = 83
The GCF is 2.
69, 78, 79, 88, 88, 88, 92, 93, 95, 98, 100 The mean is 88. The mode is 88. The range is 31.
(100 + 86 + 78)/3 = 88
The median of those numbers is 78. There are 18 numbers and when they are in numerical order the two middle ones are 76 and 80, so halfway between them is 78.
Range = 89 - 78 = 11
73.5
The median is 78.
The GCF is 2.
78
pages 78-88