V -- W;is the lot smaller than estimate is basiwl on?

Wallacf Clark. "The Gantt Chart -- II." Management Engineering. September 1921.

A Gantt Man Record Chart

SCALE .7

This chart is one type of those identified as Gantt Charts, developed by the organization of the late Henry L. Gantt.

REFERENCES

Knoeppel, Charles E., Graphic Production Control, McGraw- Hill Book Co., Inc., New York City, 1920.

Smith, W. H., Graphic Statistics in Management, McGraw-Hill Book Co., Inc., New York City, 1924.

Chapter 33 CURVE CHARTS

Xhe curve charts in this chapter are only those having one curve on a grid. This includes those having visual captions. The chapters up through page 366 cover other types of curve charts.

REFERENCES

Karsten, Karl G., Charts and Graphs, Prentice-Hall, Inc., New

York City, 1923. Riggleman, John R., and Ira N. Frisbee, Business Statistics, 2nd

edition, 1938, McGraw-Hill Book Co., Inc., New York City.

■

^m

^m

^m

^m

■

■

■

■

^^H

■

MILLIONS OF RADIO

■

■

■

■

El

ru

y

y

/

/

r

\

-

/

~

/

/

*•

/

/•

19*27 '74 *7b '7B '50 *57 'i4 "ib 'id

Electronics, October. 1938.

Number of Radio Sets and Radio Receiving Tubes Built In the United States from 1922 to 1937

1. The curves in these charts illustrate the plotting of a curve on a grid.

2. The points are plotted on the vertical rulings and a connecting line is drawn through

each point.

3. In plotting a curve, there are two variables, the independent and the dependent. In