Sådan bruger du funktionen ZTEST i Excel

Introduction and Syntax of the Function

The VLOOKUP function is utilized to search for a specific value in a table and retrieve information from cells adjacent to that value. This function is particularly useful when working with large datasets as it saves time and reduces the potential for errors.

Syntax:

VLOOKUP(lookup_value, table_array, col_index_num, [range_lookup])

• lookup_value: The value you are searching for.
• table_array: The range of cells that contains the data you want to retrieve.
• col_index_num: The column number, starting from the first column of the range, from which to retrieve the value.
• range_lookup (optional): It accepts either TRUE or FALSE. When set to TRUE, it returns the nearest match. When set to FALSE, it insists on an exact match.

Example Implementation

For example, in a table listing employees’ IDs, names, and departments, you could use it to search for a particular ID:

1 John Sales 2 Sara Accounting 3 Tom Marketing

=VLOOKUP(2, A1:C3, 2, FALSE)

This formula will return the name of the employee with ID 2, which is Sara.

Practical Usage Examples

Scenario One

Drawing sales information based on a specific customer ID from a sales list:

=VLOOKUP(102, A1:C2, 3, TRUE)

This formula will return the sales quantity for customer ID 102, which is 240.

Scenario Two

Finding the stock quantity of a product in an inventory list based on the product code:

=VLOOKUP("U101", A1:C2, 3, FALSE)

This formula allows you to determine the stock quantity of the item with the product code “U101”, which is a “Notebook” with 80 units in stock.