- some-list (list of any numeric type)
AppSheet must be given enough context to determine what type of values some-list contains, that its contents are or will be numeric. To that end, some-list must be one of the following: a column value of type List that contains numeric values; a column list (e.g., Products[Price]) for a column of a numeric type; or a constructed list (e.g., with LIST()) of a numeric type. See Examples below.
Decimal: the computed average of the values of some-list
AVERAGE(Products[Price]) : The average of the all values in the Price column of the Products table. Equivalent to
AVERAGE(SELECT(Products[Price], TRUE)). See also SELECT().
AVERAGE([Discounts]) : The average of the all items in the Discounts column value, where Discounts is of type List for some numeric type.
AVERAGE(LIST(1, 2, 3)) : 2.00
AVERAGE(LIST(0) - LIST(0)) (a valid constructed list with a type but no items): 0.00
AVERAGE(1, 2, 3) : the arguments are not in list form. To fix, wrap them in LIST() to construct a list:
AVERAGE(LIST(1, 2, 3)).
AVERAGE(LIST()) : the constructed list has no items from which to determine type.