l86 MAINE AGRICULTURAL EXPERIMENT STATION. I914. 



We may next examine the data relative to weight per bushel 

 on the eleven varieties tested for four years. The average 

 weights per bushel for each variety and each year are brought 

 together in Table 12. The means, standard deviations and co- 

 efficients of variation for the four year tests are also given. In 

 the case of the 1912 crop the weight per bushel of the early 

 seeded plots are given, rather than the average of the two plots 

 for each variety. It has already been pointed out that the late 

 seeded plots showed a much lower bushel weight than the early 

 seeded ones. It is well known that the bushel weight of oats 

 is very markedly affected by different climatic and seasonal 

 conditions. Since the early seeded plots of 1912 correspond in 

 time of seeding and other conditions with the plots of other 

 years it seem desirable to use these rather than an average of the 

 two. 



Table 12. 



Weight per Measured Bushel. 



Variety. 



Pounds per Bushel. 



1910 



1911 



1912+ 1913 



Mean. 



Standard 

 Deviation. 



Coefficient 



of 

 Variation. 



Regen. Swed. Select 



Victor 



Silver Mine 



President 



Prosperity 



Lincoln 



Senator 



Banner. 



Irish Victor 



Imported Scotch . . . 

 Kherson 



Average 



44.0 

 41.6 

 39.4 

 40.0 

 38.9 

 40.4 

 40.8 

 39.7 

 37.9 

 34.8 

 30.2 



38.88 



42.8 

 41.7 

 39.8 

 41.6 

 39.2 

 40.0 

 41.5 

 39.8 

 36.9 

 36.4 

 33.1 



39.34 



43.3 

 42.9 

 42.2 

 37.3 

 39.2 

 39.7 

 37.2 

 37.7 

 39.0 

 36.7 

 35.3 



35.1 

 36.8 

 36.8 

 35.8 

 36.7 

 33.3 

 32.4 

 34.3 

 36.1 

 34.9 

 36.2 



39.14 35.30 



41.30= 

 40.75: 

 39.55= 

 38,67= 

 38 . 50 = 

 38 . 35 = 

 37.97= 

 37 . 87 = 

 37.45= 

 35 . 70 = 

 33 . 70 = 



38.16 



= 1.21 

 = 0.79 

 = 0.65 

 = 0.76 

 = 0.35 

 = 0.99 

 = 1.21 

 = 0.75 

 = 0.38 

 = 0.29 

 = 0.79 



3.60 ±0.86 

 2.34 ±0.56 



1.92 =i=0.46 

 2.26 ±0.54 

 1.04 ±0.25 



2.93 ±0.70 

 3.60 ±0.86 

 2.22 ±0.53 

 1.12 ±0.27 

 0.86 ±0.21 

 2.33 ±0.56 



2.22 



8.71 



5.74 



.85 



4. 



5. 



2. 



7. 



9. 



5.86 



2.99 



2.41 



6.91 



.70 

 .64 



.48^ 



= 2.09 

 = 1.37 

 = 1.09 

 = 1.40 

 = 0.64 

 = 1.83 

 = 2.28 

 = 1.40 

 = 0.71 

 = 0.57 

 = 1.66 



5.74 



*Eariy seeded plots only. 



