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HP 35s User Manual Page 267

Scientific calculator.
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Flags Used:
None.
Program Instructions:
1. Key in the program routines; press
S
2. Press
3. Key in x
–value (data point) and press
i
4. Key in f
–value (frequency) and press
i
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 (x
pressed
Then go back to step 3 to enter the correct data.
7.
When the last data pair has been input, press
and display the grouped standard deviation.
8. Press
to display the weighted mean of the grouped data.
9. To add additional data points, press
To start a new problem, start at step 2.Variables Used:
X
F
N
S
M
i
Register -27
Register -28
Register -30
Example:
Enter the following data and calculate the grouped standard deviation.
to start entering new data.
U
in step 4, press
Data point.
Data–point frequency.
Data–pair counter.
Grouped standard deviation.
Weighted mean.
Index variable used to indirectly address the correct
statistics register.
Summation
f
.
i
Summation x
f
i
i 2
Summation
x
when done.
.
.
G
and continue at step 3.
.
i
f
.
i
or f
) after you have
i
i
and then press
Statistics Programs
again.
to calculate
16-21

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