Standard deviation calculation code not working as intended

Hello! I am currently trying to code a button that will calculate the mean and standard deviation from a set of 10 data values, however, my after coding my button calculates the mean properly but for whatever reason does not calculate the standard deviation and instead puts the value of the mean in its position instead.

I will leave a copy of the code below.

private void button1_Click(object sender, EventArgs e)
{
int y1;
y1 = (x1 + x2 + x3 + x4 + x5 + x6 + x7 + x8 + x9 + x10) / 10;

lblMeanText.Text = y1.ToString();

double sumsquared = Math.Pow(x1 - y1, 2) + Math.Pow(x2 - y1, 2) + Math.Pow(x3 - y1, 2) + Math.Pow(x4 - y1, 2) + Math.Pow(x5 - y1, 2) + Math.Pow(x6 - y1, 2) + Math.Pow(x7 - y1, 2) + Math.Pow(x8 - y1, 2) + Math.Pow(x9 - y1, 2) + Math.Pow(x10 - y1, 2);
lblStdDeviation.Text = y1.ToString();

double standarddeviation = Math.Sqrt(sumsquared / 10);
}

You set the text of both lblMeanText and lblStdDeviationText to y1 variable

So of course they will be the same

oh haha

let me quickly fix that

Also, $code

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oh I see thank you!

I

Does the calculation for the standard deviation look correct?

Seems so

it seems to be working now, I appreciate the assistance!

I will close the post shortly