1st part:
we have an array thats n=3
index element
x[0] = 2
x[1] = 4
x[2] = 6
Sum = 12
average = sum /n = 12/3=4
average =4
2nd part:
now this is kinda the tricky part
(x[0] - average)^2 ... => (2- 4)^2 =4
(x[1] - average)^2 ... => (4- 4)^2 =0
(x[2] - average)^2 ... => (6- 4)^2 =4
3rd part:
SumOfSquares = 4+0+4=8
result =SumOfSquares / (n-1) ..... 8 /(3-1)=4
ResultSquared= sqrt(4) =2
i know for the 1st part i need a loop to sum the values in the indeces then devide by n to get the average. the 2rd part is the most confusing for me as u have to subtract the average, square it and then u have to get the SumOfSquares for the 3rd part.
any idea how i could code this?