HP 32SII Group, Example:, Statistics Programs 16–21

i	Index variable used to indirectly address the correct
	statistics register.
Register 28	Summation Σfi.
Register 29	Summation Σxifi.
Register 31	Summation Σxi2fi.

Example:

Enter the following data and calculate the grouped standard deviation.

Group	1	2	3	4	5	6
xi	5	8	13	15	22	37
fi	17	26	37	43	73	115

Keys:	Display:
WS	%@value
5 f	@value
17 f	/)

f%@)

8 f @)

26 f /)

f%@)

14 f @ )

37 f /)

Description:

Prompts for the first xi.

Stores 5 in X; prompts for first fi. Stores 17 in F; displays the counter.

Prompts for the second xi. Prompts for second fi. Displays the counter. Prompts for the third xi. Prompts for the third fi. Displays the counter.

You erred by entering 14 instead of 13 for x3. Undo your error by executing routine U:

WU	/)	Removes the erroneous data;
		displays the revised counter.
f	%@)	Prompts for new third xi.
13 f	@)	Prompts for the new third fi.

Statistics Programs 16–21

File name 32sii-Manual-E-0424
Printed Date : 2003/4/24	Size : 17.7 x 25.2 cm