Anatomy of fern fronds. The anatomy of a fern frond is relatively simple. They have a stalk which connects the base of the frond to the rest of the tree and runs along the entire length of the frond to the tip. The stalk can be separated into two parts: the stipe, which is the section of the stalk before any leafy part of the frond, and the rachis, the section with leafy tissue.
When entering a range of cell references as an argument for a function or when creating a chart, in addition to typing in the range manually, the range can also be selected using pointing. Ranges are identified by the cell references or addresses of the cells in the upper left and lower right corners of the range. These two references are separated by a colon ( : ) which tells Excel to include all the cells between these start and end points.
To count the number of cells that contain values between two numbers in a range of cells, you can use the COUNTIFS function. In the generic form of the formula (above) range represents a range of cells that contain numbers, X represents the lower boundary, and Y represents the upper boundary of the numbers you want to count. How this formula works.