LENGTH OF THE TNTERNODES 



25 



TABLE 3 



Diameter of internodes. Under each group the first column gives frequencies ivhen 

 the observed values are reduced to 1000. The second column {F) the observed number 

 of frequencies. 



b. Frequency Distributions. Chart I 



An examination of the polygons which represent the observed 

 data shows clearly that they deviate from the normal symmetrical 

 figures to a considerable extent. Even those curves which come 

 nearer to the symmetrical figure have the maximum ordinates 

 too high to be fitted with the equation of the normal curve 



V = 



OV2tf 



2 a- 



An actual determination of the various constants from the data 

 according to Pearson's method of the moment proves the correct- 

 ness of our supposition, for in every case the values of p t 

 and skewness deviate widely from zero, while in the normal 

 symmetrical curve, these constants just mentioned should equal 

 zero or be very near to it, and in addition the value of /? 2 is not 

 equal to 3. 



