Graphic Presentation pt 3 of 3

Page 1

Ill=l|l=l|l=l|l=l|l33, Chapter 40

OGIVE AND LORENZ CHARTS

X he Ogive chart

also called a cumulative frequency curve. Its definition is as follows: a frequency distribution in which "more than" or "less than" data are presented. One scale of the grid represents percentages and the other scale represents "more than"

or

"less

is

than" values.

NUMftER OF FAMILIES

NUMftER OF FAMILIES RECEIVIN6 INCOMES OVER SPECIFIED

I

AMOUNTS

90,000,000

20,000,000

10,000,000

<Z Rrdrawn from Advertising and

Number

of

Families Receiving

States 1.

January 1917

Selling,

in

Incomes Over Specified Amounts

amount The number

In reading the above chart the

bottom

in

the

United

1916.

of the

diagram.

of the

income

of families

is

is

read by the scale at the

indicated by the scale at the

left-hand side. 2.

If

learn how many families are receiving an income of $1,500 and upshown by the point where the curve crosses the middle vertical ruling between the $1,000 and the $2,000 lines. This is found to be at 3,750.000 accord-

you wish wards,

it

to is

ing to the scale at the

left.

There

are, therefore,

that are receiving an annual income of $1,500.

approximately 3,750,000 families In the

same way

it

is

possible to

estimate that there arc 5,150,000 families that are receiving an income of $1,200.

lll

= lll=lll=lll=lll


Turn static files into dynamic content formats.

Create a flipbook
Issuu converts static files into: digital portfolios, online yearbooks, online catalogs, digital photo albums and more. Sign up and create your flipbook.