432 Bulletin 279, 



correlations 



The correlation between earliness and height for 1905, 1906 and 

 1907 is given in Figs. 123, 124 and 125. An inspection of these tables 

 shows only a low degree of correlation, which is negative in all cases. 

 In 1907 the correlation was much higher than in the two preceding 

 years, due to the tendency of the late blooming individuals to be low 

 in stature. 



The correlation between earliness and weight (Figs. 126, 127 and 128) 

 is also very low. In 1905 there was a low positive correlation, in 1906 

 there was practically no correlation, while in 1907 the tendency of the 

 extremely late plants toward low weight caused a negative correlation, 

 which, however, was very low. 



Between duration of bloom and height (Figs. 129, 130 and 131) we 

 find a lower correlation than in the case of any of the other characters 

 studied. In 1905 and 1907 there was a very low negative correlation, 

 while in 1906 it was practically zero. 



The correlation between duration of bloom and weight (Figs. 132, 

 133 and 134), although low, is slightly higher than in the case of the 

 preceding combination. It was negative in each of the three years. 



The highest correlation is between weight and height. It will be 

 seen (Figs. 135, 136 and 137) that there was a marked increase in the 

 correlation coefficient from 1905 to 1907. The correlation was positive 

 in all cases. 



