HP 35s Scientific Calculator Manuel d'utilisateur télécharger pdf (Page 168)

12-2 Statistical Operations

Entering One–Variable Data

1. Press  ()to clear existing statistical data.

2. Key in each x–value and press .

3. The display shows n, the number of statistical data values now accumulated.

Pressing

 actually enters two variables into the statistics registers because the

value already in the Y–register is accumulated as the y–value. For this reason, the

calculator will perform linear regression and show you values based on y even

when you have entered only x–data — or even if you have entered an unequal

number of x–and y–values. No error occurs, but the results are obviously not

meaningful.

To recall a value to the display immediately after it has been entered, press

.

Entering Two–Variable Data

If the data is a pair of variables, enter first the dependent variable (the 2

variable

of the pair) and press

, and then enter the independent variable (the first

variable of the pair) and press

.

1. Press   () to clear existing statistical data.

2. Key in the y–value first and press

.

3. Key in the corresponding x–value and press .

4. The display shows n, the number of statistical data pairs you have

accumulated.

5. Continue entering x, y–pairs. n is updated with each entry.

To recall an x–value to the display immediately after it has been entered, press

.

Correcting Errors in Data Entry

If you make a mistake when entering statistical data, delete the incorrect data and

add the correct data. Even if only one value of an x, y–pair is incorrect, you must

delete and reenter both values.

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HP 35s Scientific Calculator Manuel d'utilisateur Page 168