Final answer:
To change the column width to 15 characters in Excel, right-click on column C, choose 'Column Width,' and enter the value '15'. The provided instructions, however, do not match this process but instead seem related to a statistical function within a calculator program.
Step-by-step explanation:
To change the width of column C to exactly 15 characters, you will typically need to use a spreadsheet program such as Microsoft Excel. However, the instructions given do not correlate to any known functionality within Excel or similar spreadsheet tools.
Normally, to adjust column width in Excel to a specific number of characters, you would:
- Right-click on the column C header.
- Select 'Column Width' from the context menu.
- Type the value '15' (assuming each character is approximately one unit wide).
- Press 'OK' to apply the new width.
Unfortunately, the instructions provided do not correspond to this process and appear to be for a different type of task, possibly related to a statistics function, which involves pressing STAT and navigating through menus, unrelated to changing column width. If these are the instructions you have, it seems there might be a mix-up, and you should confirm the steps for the task you want to complete.