Final answer:
To adjust cell size, use the Format option in the Home tab's cell group or manually drag the cell boundaries. Double-clicking also auto-fits the cell size. For graphing calculators, use the ZOOM key for fitting data to window.
Step-by-step explanation:
To adjust the height or width of a cell to fit the dialog within it, click Format in the Home tab's cell group. This option allows you to modify the row height or column width to the content of the cell. Also, you can manually drag the box at the edge of the cell boundary to adjust its size. Double-clicking on the cell boundary will auto-adjust the cell to fit the content. The File and View tabs typically do not provide direct options for adjusting cell size.
For operation on a calculator, like for example on a graphing calculator, you can usually press the ZOOM key and then select the option that fits the window to the data. This is particularly helpful when working with statistical data or graphing as it allows you to see all the relevant data points properly scaled within the graph view.