5.3 Summary of selected statistical methods for examining distinctness 5.3.1 Selected methods used in DUS examination Method of Minimum Number Minimum Degrees Hypothesis to be Type of Other observation of years/growing of freedom tested characteristic cycles COYD* MS/VS 2 20 in two D/non-D for variety QN - growing cycles means Long Term MS/VS 2 20 (using data from D/non-D for variety QN - COYD* more than 2 means years/growing cycles) 2x1 % MS 2 D/non-D for variety QN - means 2 or more varieties compared by Chi square VS - - Hypothesis for D PQ/QN one characteristic based on Expressions allocated to two or previously known more categories facts or principles Value of each category is more than five methods 2 varieties compare by Fisher’s VS - - Hypothesis for D PQ/QN one characteristic test based on Match Expressions allocated to previously known two categories facts or principles* of each category is less than 10 * Under certain circumstances *MG and VG may also be applicable
5.3 Summary of selected statistical methods for examining distinctness 5.3.1 Selected methods used in DUS examination Method of observation Minimum Number of years/growing cycles Minimum Degrees of freedom Hypothesis to be tested Type of characteristic Other COYD* MS/VS 2 20 in two growing cycles D/non-D for variety means QN - Long Term COYD* MS/VS 2 20 (using data from more than 2 years/growing cycles) D/non-D for variety means QN - 2x1 % MS 2 D/non-D for variety means QN - Match methods Chi square VS - - Hypothesis for D based on previously known facts or principles PQ/QN 2 or more varieties compared by one characteristic Expressions allocated to two or more categories Value of each category is more than five Fisher’s test VS - - Hypothesis for D based on previously known facts or principles* PQ/QN 2 varieties compare by one characteristic Expressions allocated to two categories of each category is less than 10 * Under certain circumstances *MG and VG may also be applicable