how do i calculate the average of ranges?

Question

for example if 8 peopele fall in the ranges of 18-24years,6 people fall between 25-30 and 6 people fall between 31-35years, how do you calculate the average age range

Answer 1

You need to weight the values as suggested by a_math_guy, but he provided a way to find a single weighted average value, not a weighted range. The solution is to find the weighted average of the endpoints of the ranges. For "8 people between 18 and 24", multiply 8*18=144 and 8*24=192.

# min max min' max'
8 18 24 144 192
6 25 30 150 180
6 31 35 186 210

There are 20 people total, so sum each of the min' and max' columns and divide by 20:

345/20=17.25 582/20=29.10

The average range is 17.25 to 29.10.

Answer 2

it's easy for example for the first one 8 people fall in the ranges of 18-24 years you add 18+24= 42 and divide by 2 because it is 2 years we compare so 42/2 = 21 the range is 21 if we would have 3 number or age to compare you would add tose 3 ages up and then divide the result by 3 so on..for 4 or 5

Answer 3

(8*midpoint between 18-24 + 6* mdpt between 25-30 + 6*mdpt between 31-35) / (8+6+6 people) so (8*21 +6*27.5 + 6*34) /22 = about 24.4

Answer 4

add all the ages and then devide by the number of ppl....exampleif mike is 12 and judy is 38 and joe is 45 then the average is31.66666 see you add all of them up and get 95 then devide by 3 and your answer is>>>>>>NOW!!!!! NEXT QUESTION??????