Biology, images, analysis, design...
Use/Abuse Principles How To Related
"It has long been an axiom of mine that the little things are infinitely the most important" (Sherlock Holmes)

Search this site



Just a note

SS =   Σ ( Yi2 ) −  ( ΣYi )2

Where :

  • SS is the sum of the squared deviations of Y from its mean, ΣY/n, and there are n values of Y,
  • Σ ( Yi2 ) is the square of Y, summed for all i from 1 to n,
  • ( ΣYi )2 is the square of the sum of all values of Y.
  • The sample variance (s2) is SS/(n-1), assuming there are n-1 degrees of freedom.