66 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 139 



Table 15. — Expected numbers of discrepancies of forecasts between assigned 



limits 



Numbers expected of 4-month intervals in 9 years, 1959-1967, when 

 (O-F) has certain values 



Group 1. Mean (0-F)=20 percent 



<5 6-10 10-20 20-30 30-40 >4o 



Bismarck 6 3 8 5 1 4 



Charleston 4 o 10 8 I 4 



Cincinnati 4 4 7 3 4 5 



Independence 4 5 4 8 2 4 



Madison 3 5 8 4 4 3 



Nashville 2 7 2 8 5 3 



Port Gibson 8 2 6 5 4 2 



Rochester 5 5 5 7 3 2 



Spokane 3 6 7 6 2 3 



St. Louis 6 4 3 6 4 4 



Washington 6 5 8 4 2 2 



Group 2. Mean (0-F) = 26 percent 



<6 7-13 14-26 27-40 41-52 >S2 



Albany, Oreg 4 5 7 5 4 2 



Augusta 1 7 9 6 1 3 



Denver 3 2 10 7 3 2 



Little Rock 5 6 4 6 1 5 



Peoria 4 3 6 7 4 3 



Salisbury 5 5 3 8 3 3 



Group 3. Mean (O-F) =jo percent 



<7 8-15 16-31 32-46 47-62 >62 



Detroit 5 5 4 8 2 3 



Natural Bridge, Ariz — 644922 



Salt Lake 6 2 4 6 4 5 



Santa Fe 5 5 7 4 2 4 



St. Paul 3 5 8 6 4 1 



Group 4. Mean (O-F) = 40 percent 



<io 11-20 21-40 41-60 61-80 > 80 



El Paso 3 5 5 3 7 4 



Sacramento o 4 11 6 3 3 



San Bernardino 3 2 9 7 2 4 



Sums of 25 104 106 159 152 74 80 



Means 4.2 4.2 6.4 6.1 3.0 3.2 



Limits <i i-i i-i 1-3/2 3/2-2 >2 



