HP 12C Financial Programmable Calculator Manual do Utilizador descarregar pdf (Página 107)

106

levels of the Tower of Pisa (which was leaning even then) and timed its

descent by counting his pulse. The following data are measurements

Galileo might have made.

Find the power curve formulas that best expresses h as a function of t (h =

The formula that best expresses h as a function of t is

We know, as Galileo did not, that in fact h is proportional to t

Standard Error of the Mean

The standard error of the mean is a measure of how reliable the mean of a

sample (

) is as an estimator of the mean of the population from which the

sample was drawn.

To calculate the standard error of the mean:

(pulses)

2 2.5 3.5 4 4.5

h (feet) 30 50 90 130 150

Keystrokes Display

CLEAR

1.00 First pair data input.

2.5

2.00 Second pair data input.

3.5

3.00 Third pair data input.

130

4.00 Fourth pair data input.

150

4.5

5.00 Fifth pair data input.

1.00

Correlation coefficient (between In

y and ln x).

7.72 Value of A.

1 0

1.99 Value of B.

h 7.72t

1.99

1 2 ... 102 103 104 105 106 107 108 109 110 111 112 ... 164 165

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HP 12C Financial Programmable Calculator Manual do Utilizador Página 107