What are the mean median mode and range of the data set given the altitude of lakes in the feet 12,-9,-14,-39,-49,-49,-18,-43

if u want to find the range of left and right...u need to find the mid , the half of the data that's how u find the mid .Now sence u separate get a side if the data and subtract the small and big number that how u find the range..Do it to both side and place it in the number lineTHANK ME LATER (:

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb