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.
A continental climate is usually found in the interior of continents. Cold summer, warm summer and subarctic regions are the three types of continental climates, and they only exist in the Northern Hemisphere. Wet-summer seasons occur in the warm-summer region, which is why it is called the humid continental region. Most parts of Eastern Europe, including Georgia and Romania have a humid continental climate. Cool-summer regions have winters with snow and low temperatures. A cold-summer climate is characterized by cold winds that flow from the Arctic.