Sharp PC-1403

3 6
V al u e
3 5
45
5 5 6 5
Fr equ en c y 1
1 5 2
Ex a mpl e:
Ca l c u late sta nd ar d d ev i at i on, m ea n , a n d varia n ce ( sx ) 2 fr om th e follow i ng da t a :
S et t h e co m pu ter in the s ta t is ti cal cal cula t io n m ode .
jL x 2 - n i 2
ax =
n
(U se d wh e n a ll t he popu l at i ons a r e t a ke n as
s amp l e d a t a o r when fin d i ng the sta n dard
d e viat i on of a po p u l ation with sa mp les ta ken
as th a t pop u l ation . )
D a t a f o r s in g l e - va r i a ble s t atistic c a l c u lations ar e input by t h e f o ll o w i ng key operati o n s:
( 1 ) D a t a @ill! ( u se d t o en te r d ata o ne by o ne)
(2 ) Data 00 F req u enc y @ill! (use d to e nt e r tw o o r mo r e of t h e sa m e data)
" n ".
( 6 ) ax :
j
~ - ---- (U s ed to e sti m a t e the s ta n dard devi a t i on of
LX 2 - ni 2
s x = . a p opulation f rom the sa mp l e dat a e xtrac t ed
· n - 1
fr o m that popu l ati on . )
S ta n dard de v i at io n wit h pop ul a tion par am eter t aken to be
" n - 1 ".
s x: (5)
1 . Single-variable Stat i s ti cal C al cu l ation
T h e followi n g sta ti s t ics a r e obta i n ab le i n a sin g l e - v a r ia ble statist i c calculation :
(1 ) n : N u mb e r of samples
(2 ) Lx": S um to ta l of sa mp l e s
(3) Lx 2 : S um of s q uar es of sa m p les
(4) :X : Mea n v alu e of s amp l es i ,,.,, Lx
n
Stand ard de via ti on w ith popul ation p a rameter ta k en to b e
• H exade c imal calc u lati o n
* Conve r s i on betwee n h exadec im al and deci m a l n umb e r s
T o c l e ar p r evio u s s tati s ti c a l i nput s a n d c a lculat i on s , reset th e st ati s t ic al cal c ulation
mod e o nce and s e t this m ode a gain . Ot h e rw is e , wh en a ne w stati s tical calc u l a t i o n i s
perfo r med, in c o rr e c t answers will be obta in ed.
Wh en th e s t a tis t i ca l ca l c ulation mode i s s et , th e follo w i ng c an n ot be perf o rme d :
• Mem o ry calc ul atio n
• Ca l c ul atio n with p a r e nth e s es
• Coo rd inates co n ve r s i o n
U sing a s a C a lculator