Halfway between 70 and 100 is (70 + 100) ÷ 2 = 85.
The halfway point between 70 and 80 is (70 + 80) ÷ 2 = 75
90
176-84=92, and half of 92 is 46.84 + 46 = 130 and 176 - 46 = 130, so 130 is halfway between 84 and 176.
130
50
It is: 70
70
43
About 95% of the population has IQ scores between 70 and 130. This is the average range on a standard IQ test.
(50 + 70)/2 = 120/2, which is 60.
55