EXPONENTIAL FUNCTIONS. 



Value ol c' and e-' and their logarithms. 



Table '16. 



LEAST SQUARES.* 



Values of P = -~- I e-<''^> "</(/*«; 



Table 47. 



This table gives the value of P, the probability of an observational error having a value positive or negative equal 



2 /*Ax 



to or less than x when /t is the measure of precision, P : 



2 /•> 



-(*»)V(/Lr) 



* Tables 47-52 are for the most part quoted from Howe's " Formulae and Methods used in the application of Least 

 Squares."' 

 Smithsonian Tables. 



35 



