median is the number in the middle when they are arranged in increasing numerical order example 1,2,3 median is 2 becaus it is in middle 1,4,6,7,8 6 is median
if you have an even amount then average the middle two 1,3,5,7 median is the mean of 3 and 5 which is 4
so
3,5,7,11,23 median is 7 right now there are an odd amout of numbers adding 1 will result in even to find the median of even set of numbers, average the 2 middle ones right now 7 is center the mean of 5 and 7 is 6 the mean of 7 and 11 is 9 we want a mean of 9 so add any number greater than or equal to 11 3,5,7,11,12,23 is one option 3,5,7,11,23,50 is another
mean is 9 mean is the average of them x is the number to be added 6 numbers will be the set since there are 5 now and adding 1 will get 6 (3+5+7+11+23+x)/6=9 (49+x)/6=9 times both sides by 6 49+x=54 minus 49 both sides x=5
the number added must be 5
to make the median of the 6 numbers 9, add any number greater than or equal to 11, such as 12 or 234
