. Elements of statistics. Statistics. Ch. 7 LINEAR REGRESSION AND CORRELATION 193 the points on the graph. The amounts by which the monthly mean temperatures are above or below the mean of all the temperatures are shown as vertical distances above or below the horizontal line. 90 80 a. 70 - E ^50 40 30 i 1 1 1 1 1 - • - - • - — • _ - • ~ • ~ 1 I 1 I 1 1 ° 2 3 4 5 Order of draw A. May July Apr. Month B Figure Mean monthly temperatures at Topeka, Kansas, plotted first at random and then according to the corresponding month. As far as Figure is concerned these deviations are
. Elements of statistics. Statistics. Ch. 7 LINEAR REGRESSION AND CORRELATION 193 the points on the graph. The amounts by which the monthly mean temperatures are above or below the mean of all the temperatures are shown as vertical distances above or below the horizontal line. 90 80 a. 70 - E ^50 40 30 i 1 1 1 1 1 - • - - • - — • _ - • ~ • ~ 1 I 1 I 1 1 ° 2 3 4 5 Order of draw A. May July Apr. Month B Figure Mean monthly temperatures at Topeka, Kansas, plotted first at random and then according to the corresponding month. As far as Figure is concerned these deviations are simply the consequences of unexplained variations in temperature. However, when each temperature is associated with the month to which it belongs (as in Figure ) it is apparent that all but a small amount of the variability among these temperatures is associated with a definite tendency to increase rather uniformly with succeed- ing months of the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Fryer, Holly Claire. Wiley
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