STATISTICAL PROPERTIES OF CHLOROPHYLL FLUORESCENCE INDUCTION PARAMETERS

Parameters of the fast chlorophyll(Chl) fluorescence induction (the O- J-I-P curve) of plants of winter wheat grown in the field canopy were statistically tested for Gaussian distribution. Five different statist ical methods showed that the obtained values did not obey the Gaussian distribution law. The presentation of the parameters with the help of the mean and standard deviation masks the information about statistic al properties of the values. Thus, we recommend to present the paramet ers by means of median, quartiles, and minimum and maximum values rath er than by means of the mean and standard deviation.