HP 10s Scientific Calculator - Manual (Page 24)

Statistics
■ Standard Deviation-SD
P r e s s H t o s e l e c t S D m o d e f o r s t a t i s t i c a l
calculations with standard deviations.
SD.........................................................................................H H
B In SD and REG modes, the @ key acts as the key.
B Press the g ^ (Scl) B keys to erase the
statistics memory before you enter data.
B Press the following key to input data.
data>
B Input data to calculate n ,'S.x, , x , xo n ,
X o n-i.
To display this result Press these keys
I
sh
I
ft
I |
m
I| m
~Sx
jSHiFTl M
n
IsiiiFTl |M| rri
X
I sh WI |T wi | rn
xo n 1^ |s^ [T1
XO n-l 1^ islil
• Example: Calculate xo n-i, xo n, x , n,
given the following data:
1 5 , 1 4 , 1 1 , 1 5 , 1 3 , 1 3 , 1 4 , 1 2
In SD mode :
] m (Scl) I (Stat clear]
i5[pg 1.
Each time you press [^, the data you have just
entered is stored. The n= value shown on the screen
indicates the number of data pairs you have entered.
14 [Din 1 1 [Pin 15 fpin
1 3 |
dt
| [
dt
I 14 [
dt
I 1 2 |
pt
1
Standard deviation of the sample
(xon-i)= 1.407885953 H H S B
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