14 
BULLETIN 13822, U. S. DEPARTMENT OF AGRICULTURE 
been more rapid than the upward trend in the price of ‘all com- 
modities, and if the upward trend in the five items of cost had not 
Deviations cf Factors from their Trends, Selected Farms, North Dakota, 1896-1920 
PER : 
CENT 
160 ee ee Ba 
Price of Wheat 
i i 
i40/—1 fy 
: Ht 
: fea 
4 Selected Costs - : 
/ncrement 
x Estate 
Value 
ANE, ¢ 
pl 
ees 
Ss 
i896 1900 
1905 1910 1915 1920 
CR Indicates range of seven curves shown on above grill in detail 
Fic. 3.—Real estate taxes were more variable relative to their standard deviation than 
were other elements shown here. This is due largely to the fact that the standard 
deviation was small in the case of taxes. This graph shows especially the duration 
and intensity of deviations at various points in the quarter century. 
Deviations ex- 
pressed as percentages of standard deviations from trends of factors having annual 
changes at relatively uniform rates 
been less rapid, the trend of the purchasing power of primary net 
rents would probably have been downward. Moreover, the upward 
Er 
