A function is one specific function, like LEFT for getting a substring starting from the left, or TODAY for getting today's date, or SUM for getting the sum of some numbers.
A formula is a combination of cell references, values, strings, and functions, used to define how to calculate the value to display in a cell.
Function
function
the asterisk is used for what function when building a formula in excel
You can use the Insert Function button fx on the Formula bar to find an Excel function by typing a description of the formula at the Insert Function dialog box, in the Search for a function text box and then click Go.
an equal sign =
Excel has a ZTEST function. It has the format ZTEST(array, µ0, sigma).
A nested formula is where one or more functions are placed inside another function to make a formula. For example you can write a formula where you put an IF function within an IF function and this would be a nested formula.
prefix the excel function with application. eg. a=application.evaluate("1+2+3")
The SUM function would be the most commonly used function in Excel.
Functions have a name followed by brackets. So when you have a name followed immediately by brackets, it is a function. On the worksheet it would also have an equals in front of it. In a module it would have the keyword Function in front of it.
You can calculate quantity in Excel with the SUM function.
Formula autocomplete