1 That is, the macro generates a random number for each observation, the data set is sorted by the random number, and then the first num observations are selected.  Then, call the macro select three times once for each of the city data sets .... scollege, pmatilda, and bellefnt .... selecting five observations from each.
A humid continental climate is marked by variable weather patterns and a large seasonal temperature variance. Places with more than three months of average daily temperatures above 10 Â°C (50 Â°F) and a coldest month temperature below â3 Â°C (27 Â°F) and which do not meet the criteria for an arid or semiarid climate, are classified as continental.
In addition, the location in question must not be semi-arid or arid. Humid continental climates tend to be found above 30Â° N latitude to 60Â° N latitude, within the central and northeastern portions of North America, Europe, and Asia.They are much less commonly found in the Southern Hemisphere due to the larger ocean area at that latitude and the consequent greater maritime moderation. humid continental climate (Koeppen kÃ¶ppen Prefix d and a third letter of a or) b is a climatic region defined By Russian german Climatologist Wladimir koeppen kÃ¶ppen, in 1900 which is typified by large seasonal, temperature differences with warm (to hot and) often humid summers (and cold sometimes) severely. cold winters