HP 35s Scientific manual , , ,  U , , 

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)
S 		Prompts for the first xi.
	value	Stores 5 in X; prompts for first fi.
	
	value	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:

U 		Removes the erroneous data;
		displays the revised counter.
		Prompts for new third xi.
	
		Prompts for the new third fi.
	
		Displays the counter.
	
		Prompts for the fourth xi.
	
		Prompts for the fourth fi.



16-22Statistics Programs