Calculated field similar to series function in excel

Hi All,

I got a request from user, the input file is like

Value

0.45

And the output file generated in excel by using series is

Value

1

They are using this to plot a curve chart in the excel, which is like a perfect normal distribution curve...

Tried using the Value in Tableau as a line chart, but its not a perfectly curved one...

Any suggestions...

Thanks in Advance,

Sree