The following article introduces you to the NORM.S.DIST function - one of the functions in the statistical function group is very popular in Excel.
Description: The normalized distribution function has a mean of 0 and a standard deviation of 1. Use the function instead of a table containing normalized curve areas. Support functions from Excel 2010 onwards.
Syntax: NORM.S.DIST (z, cumulative)
Inside:
- z: The value you want to calculate the distribution, is a required parameter .
- cumulative: A logical value that determines the form of the function, which is a required parameter, including:
+ cumulative = True -> returns the cumulative distribution function.
+ cumulative = False -> returns the probability density function.
Attention:
- If z is not a number -> the function returns the #VALUE! Error value
- The equation for the standardized density function is:
[fleft (z right) = frac {1} {{sqrt {2pi}}} {e ^ {- frac {{{z ^ 2}}} {2}}}]
For example:
Find the normalized distribution of values in the following data table:
- Calculate the value of standardized cumulative distribution function (corresponding to True value ) In a cell to calculate, enter the formula : = NORM.S.DIST (D6, D7)
- Press Enter -> standard cumulative distribution function value is:
- Calculate the value of the standard probability distribution function (corresponding to the value of False). In a cell to calculate, enter the formula : = NORM.S.DIST (D6, D8)
- Press Enter -> the standard probability distribution function value is:
Above are instructions and some specific examples when using the NORM.S.DIST function in Excel.
Good luck!