Diagnostic daytime multiple sleep latency test (MSLT) is used to diagnose narcolepsy and to measure the degree of daytime sleepiness. It measures how quickly you fall asleep in quiet situations during the day. It also monitors how quickly and how often you enter REM sleep.
Array formulas provide a way by which Excel users can discover such useful information. To explain the power of array formulas I'll use this database. It shows sales by Seller, Product, Region, and Customer, with Quantity and Total Sales, in dollars. I named each column of data with the label shown in row 1.
Rating Newest Oldest. Best Answer: Excel is an application generically known as a spreadsheet. It's primary function is to do math although it can be used for making list and tables also.It's primary usefulness is in performing multiple math calculation based on entered numbers is an array (sheet) on the screen.ating Newest Oldest. Best Answer: Excel is an application generically known as a spreadsheet. It's primary function is to do math although it can be used for making list and tables also.