Regression calculations
This mode is for statistical calculation and can be divided further into: [16]
- Linear regression: y=A+Bx [17]
- Logarithmic regression: y=A+B*ln x [17]
- Exponential regression: ln y=ln A+Bx [17]
- Power regression: y=A+xB [17]
- Inverse regression: y=A+B/x [18]
- Quadratic regression: y=A+Bx+Cx2 [18]
For some input ordered pairs, one of the below can be calculated. [19] (The availability differs from modes. [19] )
Σx2, Σx, n, Σy2, Σy, Σxy, 
, xσn, xσn-1, 
, yσn, yσn-1, Regression coefficient A, Regression coefficient B, Correlation coefficient r, 
, 
, Σx3, Σx2y, Σx4, Regression coefficient C, 1and 2
Program
The calculator can hold up to four programs with a total capacity of 360 bytes.
Program commands: [20]
- ? – Operator input command, used when user's input is required. Usually used with → (variable)
- → – Assign to variable command, to assign the value before it to the variable after it. Always used as (value)→(variable).
- : – Multi-statement separator, separate program statements
- ◢ – Output command, output the value
– Conditional jump, jump when conditions are met- = – Relational operator
- ≠ – Relational operator
- > – Relational operator
– Relational operator- Goto – Unconditional jump, jump to label, otherwise Lbl
- Lbl – Label, jump destination
Conditional jumps
Conditional jumps [21] should be used in the syntax:
condition statement 1 : statement 2
When condition is true, statement 1 is executed, then statement 2 is executed. If condition is false, statement 1 is skipped and statement 2 is executed.
E.g.: ...A=0A+1→B:C+5→D:... If A=0, both A+1→B and C+5→D is executed. If A≠0, only C+5→D is executed.
Unconditional jumps
Unconditional jumps [20] use Goto and Lbl to operate.
When Goto n (where n is an integer in 0-9) is executed, the program will jump to Lbl n. Loops can be created with unconditional jumps.
