Return the logical value TRUE for any error type.

=ISERROR(value)

Search one row or one column (or an array) for a value

(Vector form) =LOOKUP (lookup_value, lookup_vector, [result_vector])

(Array form) =LOOKUP(lookup_value, array)

Sum (add) values in a range that meet a single criteria.

SUMIF(range,criteria,[sum range])

Return the relative position of a specified item in a range

=MATCH(lookup_value, lookup_array, [match_type])

Returns the median or middle number in a data set.

=MEDIAN(number1, [number2], ...)

Return the reverse of TRUE or FALSE statements based on testing logical conditions

=NOT(logical)

Find specific text and its related starting position within a text string.

FIND(find_text, within_text, [start_num])

FINDB(find_text, within_text, [start_num])

Evaluate and return the contents of a reference specified by a text string

=INDIRECT(ref_text, [a1])

Returns the arithmetic mean or average of a data set.

=AVERAGE(number1, [number2], ...)

Return the year, month or day component of a date

=YEAR(serial_number), =MONTH(serial_number), =DAY(serial_number)

Return the absolute value of a number

=ABS(number)

Sum (add) values together.

=SUM(number1,number2,…)

Repeat a specific text string by a number of instances.

REPT(text, number_times)

Return the number of days between two dates

=DAYS(end_date,start_date)

Return the k-th largest value in a range

LARGE(array, k)