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.
The Humid Subtropical climate zone is found mostly on the eastern sides of continents (Figure 17.16). Rain falls throughout the year with annual averages between 80 and 165 cm (31 and 65 inches). Summer days are humid and hot, from the lower 30s up to 40Â°C (mid-80s up to 104Â°F).