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Published Statistical Data
Collecting and Tabulating Data
26 other sections not shown
adjusted amount analysis Anthracite coal arithmetic mean average deviation bank debits Bureau Census cent changes Chapter class interval classification coefficient coefficient of determination column computed confidence interval consumer control limits correlation cyclical fluctuations demand for motor described dollars employees error of estimate example expenditures external data fact factors forecast formula frequency distribution geometric mean given gives Gompertz curve gross national product heating oil important income increase index number index of seasonal individual industry July large number logarithms median method Million barrels month monthly motor fuel normal curve normal distribution percentage period plotted population possible probability problem quartile random ratio regression equation relationship relatives represent result sample means scatter diagram seasonal pattern seasonal variation secular trend secured shows significant SOURCE square standard deviation standard error statistical data straight line Table tabulation tion trend line trend values United universe variable weights zero