i need to do standard deviation on my calculator for my math class, but whenever i do it i get a wrong answer.
here is what i am doing
i enter the numbers in L1 and their frequency in L2 and then i do the formula
ex. 10,20,30,40,50,60 in L1
1,1,1,1,1,1 in L2
but the actual answer is 17.1