Statistics - Reliability Coefficient

Statistics – Reliability Coefficient

In chance principle and statistics, the coefficient of variation (CV), also referred to as relative normal deviation (RSD), is a standardized measure of dispersion of a chance distribution or frequency distribution.

Relative Commonplace Deviation, RSD is outlined and given by the next chance operate:



The place −

  • ss = the pattern normal deviation
  • x¯ = pattern imply


Drawback Assertion:

Discover the RSD for the next set of numbers: 49, 51.3, 52.7, 55.Eight and the usual deviation are 2.8437065.


Step 1 – Commonplace deviation of pattern: 2.8437065 (or 2.84 rounded to 2 decimal locations).

Step 2 – Multiply Step 1 by 100. Set this quantity apart for a second.


Step 3 – Discover the pattern imply, x¯. The pattern imply is:


Step 4Divide Step 2 by absolutely the worth of Step 3.


The RSD is:


Be aware that the RSD is expressed as a proportion.