HP 35s User Manual page 267

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