Hotelling T2 Chart in Excel
Hotelling Chart Evaluates Two Interacting Measurements Simultaneously.
Similar to the XmR Chart, the Hotelling T2 Chart evaluates the covariances of the ranges between each of the two measures and the covariances of the actual data points. This gives two charts that are similar to the average and Range in the XmR.
Imagine for a moment that you are measuring the location of a hole drilled in a sheet of metal. It could be left or right, up or down. It's possible that both measurements, taken separately, could be stable and predictable, but the two together could have outliers.
To run a hotelling chart in QI Macros, select two columns of data and then select Hotelling T2 Chart from the Control Charts (SPC) > Special (CUSUM, EWMA) menu. QI Macros will create two charts:
Find the Hotelling Chart template by clicking on the QI Macros menu > Control Chart Templates > Special (CUSUM, EWMA) > Hotelling Chart:
Why Choose QI Macros Over Other Control Chart Software?
- Only $329 USD - less with quantity discounts
- No annual subscription fees
- Free technical support
Easy to Use
- Works right in Excel
- Create a chart in seconds
- Easy to customize & share charts
Proven and Trusted
- More than 100,000 users
- In More than 80 countries
- Five Star CNET Rating - Virus free