Flags Used:

None.

Program Instructions:

1.Key in the program routines; press when done.

2.Press Sto start entering new data.

3.Key in xi –value (data point) and press .

4.Key in fi –value (frequency) and press .

5.Press after VIEWing the number of points entered.

6.Repeat steps 3 through 5 for each data point.

If you discover that you have made a data-entry error (xi or fi) after you have pressed in step 4, press Uand then press again. Then go back to step 3 to enter the correct data.

7.When the last data pair has been input, press Gto calculate and display the grouped standard deviation.

8.Press to display the weighted mean of the grouped data.

9.To add additional data points, press and continue at step 3. To start a new problem, start at step 2.Variables Used:

XData point.

FData–point frequency.

NData–pair counter.

SGrouped standard deviation.

MWeighted mean.

i

Index variable used to indirectly address the correct

 

statistics register.

Register -27

Summation Σfi.

Register -28

Summation Σxifi.

Register -30

Summation Σx

2f .

 

i

i

Example:

Enter the following data and calculate the grouped standard deviation.

Statistics Programs 16-21

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Image 267
HP 35s Scientific manual Index variable used to indirectly address the correct, Statistics register