HP 33s 16–21, Group, Keys:, Description:, (In ALG mode), Statistics Programs 16–21

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

Keys:	Display:	Description:
(In ALG mode)

XS	%@
	value
5 g	@
	value
17 g	/
	)

g%@

)

8 g	@
	)
26 g	/
	)

g%@

)

14 g	@
	 )
37 g	/
	)

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:

XU/ )

g%@

)

13 g @ )

g/ )

Removes the erroneous data; displays the revised counter. Prompts for new third xi.

Prompts for the new third fi.

Displays the counter.

Statistics Programs 16–21