. The street railway review . i (rtlkinmi. 6, ) b>|-<^nH bl. , Repainand Rincwalaiif llarn.», anil K»bei. 9B-99- Sail lor Track*. Tool* anJ Mwellanruu* Soow Eipenv. lloilon. H. L- WILSON. .A,„.Oct- 1. 1895. 452 ^t]M,%\lvv£a\SVAC\V* compare, and how the percentages of the total compare forseveral items. For a record by months covering a period of severalyears a scale of 3 in. to the year is probably sufficientlylarge; this would allow J4 i. between the vertical lines,each of which would represent one month. For the verticalscale ID lines to the inch would pr
. The street railway review . i (rtlkinmi. 6, ) b>|-<^nH bl. , Repainand Rincwalaiif llarn.», anil K»bei. 9B-99- Sail lor Track*. Tool* anJ Mwellanruu* Soow Eipenv. lloilon. H. L- WILSON. .A,„.Oct- 1. 1895. 452 ^t]M,%\lvv£a\SVAC\V* compare, and how the percentages of the total compare forseveral items. For a record by months covering a period of severalyears a scale of 3 in. to the year is probably sufficientlylarge; this would allow J4 i. between the vertical lines,each of which would represent one month. For the verticalscale ID lines to the inch would probably be suitable formost purposes. To facilitate counting each 12th verticalline and each loth horizontal line would be made heavierthan the others. Fig. 5 will serve to illustrate the idea. Suppose that theexpense to be analyzed falls naturally into six items. Theratios which these items bear to each other or to the total Dec Jan Feb Mar Apr Mat^ June Ju/i^ Aug. iept. Oct /^o^ Dec A SIMPLE POSITIVE BLUE PRINT FIG. 5. will in most cases vary from month to month, and a com-parison of these ratios would show if any of the items havegrown unduly, and direct attention to the special pointswhich look as if further investigation might be desirable. To effect this comparison readily lay off two heavy hori-zontal lines (10 in. apart with the scales we have assumed)so that there will be 100 small divisions between express the six items in percentages of the total andplat each of them, using the lower heavy line for the datumline for Item i, this line for the datum line for Item 2, will result in a diagram similar to Fig. 5. The relativemagnitude of each item is the height of its portion of thediagram. Any change in this relative magnitude showsin the convergence or divergence of the two boundinglines. The total of the account would be plotted on the samesheet, making the vertical scale dollars instead of percent-ages. To apply this to say, the schedul
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
