# Statistical Calculations - Casio fx-82EX User Manual

Ran#: Function that generates a pseudo random number in the range of
0.000 to 0.999. The result is displayed as a fraction when MathI/MathO is
selected for Input/Output on the setup menu.
To obtain random three-digit integers
RanInt#: Function that generates a pseudo random integer between a
speciﬁed start value and end value.
To generate random integers in the range of 1 to 6
nPr, nCr: Permutation (nPr) and combination (nCr) functions.
To determine the number of permutations and combinations possible when
selecting four people from a group of 10
Permutations:
Combinations:
Rnd: Using the Rnd function causes decimal fraction values of the
argument to be rounded in accordance with the current Number Format
setting. For example, the internal and displayed result of Rnd(10 ÷ 3) is
3.333 when the Number Format setting is Fix 3. Using the Norm 1 or Norm
2 setting cause the argument to be rounded off at the 11th digit of the
mantissa part.
To perform the following calculations when Fix 3 is selected for the number
of display digits: 10 ÷ 3 × 3 and Rnd(10 ÷ 3) × 3
(SETUP)(Number Format)(Fix)

## Statistical Calculations

Perform the steps below to start a statistical calculation.
1. Press , select the Statistics Mode icon, and then press .
2. On the Select Type screen that appears, select a statistical calculation
type.
To select this type of statistical calculation:
Single-variable (x)
Paired-variable (x, y), linear regression
Paired-variable (x, y), logarithmic regression
Paired-variable (x, y), e exponential regression
Paired-variable (x, y), ab exponential regression
Paired-variable (x, y), power regression
Paired-variable (x, y), inverse regression
• Performing any of the above key operations displays the Statistics
Editor.
1000(Ran#)
(The result differs with each execution.)
(RanInt)1(,) 6
(The result differs with each execution.)
(Rnd) 1033
14
10(nPr) 4
10(nCr) 4
(MathI/DecimalO)
1033
Press this key:
(1-Variable)
(y=a+bx)
(y=a+bx+cx
(y=a+b･ln(x))
(y=a･e^(bx))
(y=a･b^x)
(y=a･x^b)
(y=a+b/x)
459
2
5040
210
10.000
9.999
2
)