
- COUNT function - Microsoft Support- Use the COUNT function to get the number of entries in a number field that is in a range or array of numbers. For example, you can enter the following formula to count the numbers in the … 
- Count numbers or dates based on a condition in Excel- See examples of how to use worksheet functions to count numbers or dates that fall within a range in Excel. 
- DATE function - Microsoft Support- To increase or decrease a date by a certain number of days, simply add or subtract the number of days to the value or cell reference containing the date. In the example below, cell A5 contains … 
- Ways to count values in a worksheet - Microsoft Support- Use the status bar for simple counting in Excel, or use functions to count cells that contain data, are blank, or meet specific conditions or multiple criteria. 
- Excel help & learning - support.microsoft.com- Find Microsoft Excel help and learning resources. Explore how-to articles, guides, training videos, and tips to efficiently use Excel. 
- Ways to count cells in a range of data in Excel- Excel contains several functions to help you count the number of cells in a range that are blank or contain certain types of data. Select the cell where you want the result to appear. 
- COUNTIFS function - Microsoft Support- How to use the COUNTIFS function in Excel to apply criteria to cells, across multiple ranges, and count the number of times all criteria are met. 
- Date and time functions (reference) - Microsoft Support- Use date and time functions to create formulas that return serial numbers, display a specific date or time, or that calculate the difference between dates or times. 
- DATEVALUE function - Microsoft Support- Jan 1, 2008 · The DATEVALUE function converts a date that is stored as text to a serial number that Excel recognizes as a date. For example, the formula =DATEVALUE ("1/1/2008") returns … 
- Sort data in a range or table in Excel - Microsoft Support- How to sort and organize your Excel data numerically, alphabetically, by priority or format, by date and time, and more.