Texas Instruments solar TI-36X - Manual (Page 39)

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Ti36eng1.doc TI-36X II Manual Linda Bower Revised:
01/10/03 10:47 AM Printed: 01/10/03 10:47 AM Page 37 of
48
³ Problem
The table below gives the Gross Domestic Product per
capita and the telephone density (main lines per 100
population) for several countries in a recent year.
Country GDP/Cap. Tel. Den.
Austria $25032 46.55
Israel $13596 41.77
Argentina $ 8182 15.99
Brazil $ 3496 7.48
China $ 424 3.35
Using the LIN regression, find the equation representing
the best fit, in the form y=a+bx, where x=GDP/capita
and y=telephone density. Find the coefficient of
correlation. Use this equation to predict the telephone
density of a country with a GDP per capita of $10,695. If
a country has a telephone density of 5.68, what GDP
per capital would you expect this country to have?
% t 4 % f " V
7 2 5 0 3 2 X 1 =25032 ø
.1: 56)6 ,-/
$ 4 6 I 5 5 Y 1 =46.55 ø
.1: 56)6 ,-/
$ 1 3 5 9 6 $ 4 1 I 7 7
$ 8 1 8 2 $ 1 5 I 9 9 Y 3 =15.99 ø
.1: 56)6 ,-/
$ 3 4 9 6 $ 7 I 4 8 $ 4 2 4
$ 3 I 3 5 Y 5 =3.35 ш
.1: 56)6 ,-/