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Answers: Click the cell you want the formula to be in consequently:
If you hold the fx button on the toolbar click it. If not, click insert / function. Click adjectives surrounded by the disappeared col after scroll down the disappeared to click average next click OK.
Click the square button at the right of NUMB 1. this will bring you to the worksheet. Highlight the schedule of numbers you want to average later click the square button at the right of strip.
It will contribute you the average of the cell you highlighted.
In excel budge to insert-function-average, next put the numbers surrounded by the formula.