Home / Statistical Tools / Analysis Tools / Tolerance Interval / Examples
Examples¶
Quick Start¶
Build a two-sided 95%/95% tolerance interval for a single column of continuous data.
Goal¶
Find bounds that we are 95% confident contain at least 95% of the population.
Sample Data¶
A single column of continuous measurements:
| Measurement |
|---|
| 9.8 |
| 10.2 |
| 10.0 |
| 9.7 |
| 10.4 |
| 9.9 |
| 10.1 |
| 10.3 |
| 9.6 |
| 10.0 |
Steps¶
-
Select the column of data, including its header.
-
On the QXL Stat Tools tab, choose Analysis Tools > Tolerance Interval.
-
Set the options:
- Confidence Level (%): 95
- Percent of Population (%): 95
- Interval Side: Two-Sided
-
Press Finish.
Result¶
Quantum XL adds a statistics table with the sample size, mean, and standard deviation, the Normal and Nonparametric bounds, the attained confidence of the nonparametric interval, and the Anderson-Darling normality statistic. It also draws a normal probability plot and a line plot comparing the two intervals. See Output for how to read each part.