(3) Lx2:
(4) x :
(5) sx:
(6) ox:
Sum of squares of samples
Mean value of samples x =
-------
Standard deviation with population parameter taken to be "n—1".
(Used to estimate the standard deviation of popula
tion from the sample data extracted from that
population.)
Standard deviation with population parameter taken to be "n".
2
I 2
----
njp (Used when all populations are taken to be samplf '
ax = / —
------
-
-----
data or when finding the standard deviation o'
^ n population with sample taken to be a population-
® Data for one-variable statistic calculations are inputted by the following operations
(1) Data (daw)
(2) Data [X] Frequency [data] (when two or more of the same data are inputted).
Note:
© When the statistical calculations mode is set, the followings can not be performed
i) Memory calculation with an independently accessible memory and storage
memories K8 and K9.
ii) Coordinate conversion
iii) Calculation including parenthesis.
iv) Hexadecimal decimal conversion.
• The followings can be used as the input data in statistical calculation:
i) Entry number
ii) Calculated result of the functions which can be used in the chain calculation.
Single Variable Statistics
Calculates standard deviation, mean, and variance (sx)2 from the following data:
Value
35
45
55
65
Frequency
1
1
5
2
As each sample is entered the number of that sample will appear on the right hand side
°f the display.
Mode: STAT, Floating decimal point system
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