Statistics
CONFIDENCE.NORM
Half-width of a confidence interval (normal distribution).
Syntax
CONFIDENCE.NORM(alpha, standard_dev, size)Example: =CONFIDENCE.NORM(0.05,B22,COUNT(B2:B21))
Available in: Excel 2010+
Try it
A tiny spreadsheet with example data. Edit the formula or any number and see the result.
Formula in F2: =CONFIDENCE.NORM(0.05,STDEV.S(C2:C7),COUNT(C2:C7))
| A | B | C | D | E | F | |
|---|---|---|---|---|---|---|
| 1 | Region | Product | Units | Price | Result | |
| 2 | East | Pen | 120 | 2.5 | 30.2227322029 | |
| 3 | West | Pen | 80 | 2.5 | ||
| 4 | East | Book | 45 | 12 | ||
| 5 | North | Book | 60 | 12 | ||
| 6 | West | Lamp | 30 | 25 | ||
| 7 | East | Lamp | 15 | 25 |
Result in F2: 30.2227322029