6/Statistical Calculations - Casio fx-180P Manual De Operación

6/ STATISTICAL CALCULATIONS
' Be sure to press 3 in sequence prior tqstarting a statistical calculation.
6-1 Standard deviation '-
1' Set the function mode to "SD'.' by pressing [2].
Ex.) Find O'n.1 , on, f, n. Ex and Zx' based on the data 55. 54, 51, 55, 53, 53. 54, 52.
OPERATION READ-OUT
"80" E 355 54 51 55 53
54 52 52.
(Sample standard deviation) E 1 .407885953
(Population standard deviation) 1.31695671 9
(Arithmetic mean) [2] 53.375
'(Number of data) [3] 8.
. . .(Sum of value) [FEE] 427.
(Suran square value) 22805.
Calculate the unbiased variance and the deviation between each data item and the
average. '
u
I
I . (Subsequently) _ [E] BE 1.982142857 (Unbiased variance)
@[BBESSB 1.625 (55 — 3?)
548 0.625 (54 — Y)
51 a —2.375. (51 7;?)
Note: The sample standard deviation 0,34 is defined as
/£t2 _
' 11—1
the population standard deViati'on an is defined as
r Sx'——(
n
and the arithmetical mean 3:" is defined as ~27?-
,2
-23..