Whois & Analysis for excelfunctions.net

Microsoft Excel is a spreadsheet developed by Microsoft for Windows, macOS, Android and iOS.

It features calculation, graphing tools, pivot tables, and a macro programming language called Visual Basic for Applications.

It has been a very widely applied spreadsheet for these platforms, especially since version 5 in 1993, and it has replaced Lotus 1-2-3 as the industry standard for spreadsheets.

Excel forms part of Microsoft Office.

In statistics and optimization, errors and residuals are two closely related and easily confused measures of the deviation of an observed value of an element of a statistical sample from its "theoretical value".

The error (or disturbance) of an observed value is the deviation of the observed value from the (unobservable) true value of a quantity of interest (for example, a population mean), and the residual of an observed value is the difference between the observed value and the estimated value of the quantity of interest (for example, a sample mean).

The distinction is most important in regression analysis, where the concepts are sometimes called the regression errors and regression residuals and where they lead to the concept of studentized residuals.

In science, a formula is a concise way of expressing information symbolically as in a mathematical or chemical formula.

The informal use of the term formula in science refers to the general construct of a relationship between given quantities.

The plural of formula can be spelled either as formulas or formulae (from the original Latin).

In mathematics, a function is a relation between a set of inputs and a set of permissible outputs with the property that each input is related to exactly one output.

An example is the function that relates each real number x to its square x2.

The output of a function f corresponding to an input x is denoted by f(x) (read "f of x").

In this example, if the input is −3, then the output is 9, and we may write.

Likewise, if the input is 3, then the output is also 9, and we may write.

(The same output may be produced by more than one input, but each input gives only one output) The input variable(s) are sometimes referred to as the argument(s) of the function.