RF Cafe Software

RF Cascade Workbook 2005 - RF Cafe
RF Cascade Workbook

Calculator Workbook
RF Workbench
Smith Chartâ„¢ for Visio
Smith Chartâ„¢ for Excel
RF & EE Symbols Word
RF Stencils for Visio

About RF Cafe

Kirt Blattenberger - RF Cafe WebmasterCopyright
1996 - 2016
Webmaster:
Kirt Blattenberger,
 BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website:
 AirplanesAndRockets.com

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Box and Whisker Plot

The Box & Whisker plot is used to display variability and centering of processes, based on quartiles, in a variable output (y-axis) versus an attribute (x-axis) at one or more levels. See the example plot below.
  • Quartiles serve to rank-order the data and identify the 25th, 50th, and 75th percentiles.
  • The Interquartile (IQ) Range is equal to the range between the first and 3rd quartiles (Q3-Q1).
  • Whiskers are limited by a mathematical calculation.
    The upper whisker can be no longer than:
                  Q3 + 1.5 (Q3-Q1).
    The whisker line is drawn to the largest value in the data set below this calculated value. If there are data points above this value, they show up as asterisks to indicate they may be outliers.
    The same is true for the lower whisker with a limit of Q1 - 1.5x (Q3 - Q1).
    The whisker line is then drawn to the smallest value in the data set above this calculated value.

 
Box & whisker chart - RF Cafe