Datexx 6518206 - Manual (Page 8)

Entering Statistical data
Ex. 1: 2 DATA 3 DATA 4 DATA
Ex. 2: 125 LOG DATA 100 LOG DATA
Ex. 3: (123 M+ MR DATA)
Making corrections
C/CE clears the last digit pressed.
INV DEL deletes the last DATA entered.
Output of Statistical Calculation Results
Output Operation
Arithmetic mean INV x
ʳ
Standard Deviation of sample INV
␴
n-1
Standard Deviation population parameter INV
␴
n
Variance of Sample INV
␴
n-1 x 2
Variance of Population INV
␴
n x 2
Sum of data INV
⌺x
Sum of Squares of data INV
⌺x
2
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Calculation priority
Calculation priority is automatically determined by
the calculator. Algebraic expressions are entered as
they would be written.
Single variable functions and calculations in
parenthesis have a higher priority than basic func-
tions like +, -, x, ÷.
During calculations lower priority calculations are
stored in the stack memory and processed in turn.
Six levels of calculations may be stored in stack
memory.
Calculation range
A maximum of 9 digits in the mantissa or 10 digits
plus 2 digits for exponent may be entered. If a result
is too large to display, an Error indicator appears.
This applies for Decimal/Octal/Hexadecimal modes.
Statistical calculations
Press MODE 5 to enter Statistical Mode. This clears
all function commands and all registers except the
memory.
The results of statistical calculations are stopped in
the statistical calculation memory. As a result, you
can perform statistical calculations again by exiting
to another mode and then resetting the calculator for
statistical calculation mode.
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