Square values in an array (JavaScript) plus floating point error

Question

I am following the first and second answer here. I have subtracted the mean from the value then console.log() it to check it out. I then use a for-loop to iterate through each value like:

for (var i = 0; i < myArray.length; i++) {
    Math.pow(squaredArray[i], 2);
};

I am also now getting a floating point error it looks like when I added the for-loop to square the values.

What am I doing wrong?

Fiddle here.

Answer 1

It looks like you're trying to loop through the values in myArray, square them, and store them in squaredArray.

for (var i = 0; i < myArray.length; i++) {
    squaredArray[i] = Math.pow(myArray[i], 2);
};

The "floating point error" was because you were trying to do this:

Math.pow(undefined, 2);