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+// Release 1: Tests to User Stories%0A%0A/*%0A%0AAs as user, I want to be able to do three things:%0A%0A(1) I want to be able to take a list of numbers and find their sum.%0A%0A(2) I want to be able to take a list of numbers and find their mean.%0A%0A(3) I want to be able to take a list of numbers and find their median.%0A%0A*/%0A%0A// Release 2: Pseudocode%0A%0A/*%0A 1. create an array for your values%0A 2. set the array to a variable (for now I'll call it List)%0A%0ASUM%0A  1. create a function for sum with List as arguemt%0A  2. create an empty variable set at index 0 (I'll can it Total)%0A  3. iterate through List and collapse each integer value onto index zero of Total%0A  4. run until the full length of List is reached%0A  5. consol log%0A  %0AMEAN%0A%601. create function for mean with List as argument%0A 2. either repeat steps 2-4 of SUM, or weave sum into MEAN by changing the argument to contain Total and List%0A 3. var mean = Total/List.length%0A 4. consol log%0A %0AMEDIAN%0A%601. create a function for median with List as an argument%0A 2. sort list using (a,b)%0A 3. create variable half%0A 4. set to a math object with a floor rounder for List length divided by 2%0A    - var half = Math.floor(list.length/2)%0A 5. if list.length modululous 2 (the division has no remainder) return list%5Bhalf%5D%0A 6. else move down the array and return list%5Bhalf-1%5D+list%5Bhalf%5D/2.0%0A 7. consol log%0A  %0A%0A*/%0A%0Afunction sum(list)%7B%0A%09var total = 0%0A%09for (var i = 0; i %3C list.length; i++)%7B%0A%09%09total += list%5Bi%5D%0A%09%7D%0A%09return total;%0A%7D%0A%0Afunction mean(list) %7B%0A%09var total = sum(list);%0A%09var mean = total/list.length;%0A%09return mean;%0A%7D%0A%0A%0A// driver code%0Anum_array = %5B1,2,3,4,5,6,7,8,9%5D;%0Aconsole.log(%22total is : %22 + sum(num_array));%0Aconsole.log(%22mean is : %22 + mean(num_array));%0A

Add code for sum and mean to 7.8