What IS*() the data type?
The values contained in each cell (either the things you typed, or the results of formulas) have a data type. Common types include number, text, date and logical.
Sometimes it is useful to check what type of data you have in each cell, since it may not be obvious just from looking at it. Google Sheets has a series of functions with names beginning "IS" that perform these checks, for example, ISTEXT() takes a cell address like B3 as an input, and returns the logical value TRUE if the cell contains text, or FALSE otherwise.
Likewise, ISNUMBER() checks for numbers in the cell, ISDATE() checks for dates, and ISLOGICAL() checks for logical values.
The worksheet shows data taken from Wikipedia regarding men's 100m sprint world records.
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Check the data types of the first row of sprint data. In cell A21, there is a formula to check if the value in A2 is numeric.
- Copy the formula right as far as
G21by dragging the bottom-right corner ofA21. - In cells
A22toG22, check if the values in cellsA2toG2are text by writing formulas that callISTEXT(). - In
A23toG23, useISDATE()to check ifA2toG2are dates. - In
A24toG24, useISLOGICAL()to check ifA2toG2are logicals.
