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FX 300 MS Training guide
Regression
Use the [MODE] key to enter the Regression (REG) mode when you want to perform statistical
calculations using regression. [MODE] [3]
When you enter Regression mode, you can select from 6 types of regression:
Linear regression [1] (Lin)
Logarithmic regression [2] (Log)
Exponential regression [3] (Exp)
Power regression → [1] (Pwr)
Inverse regression → [2] (Inv)
Quadratic regression → [3] (Quad)
• To clear statistical memory, press [SHIFT] [CLR] [1] [=].
• To enter data, use the following key sequence: <x data> , <y data> [DT]
• The values produced by a regression calculation depend on the values input.
Results can be recalled using the following:
∑ x
2
[SHIFT] [S-SUM] [1]
∑ x [SHIFT] [S-SUM] [2]
n [SHIFT] [S-SUM] [3]
∑ y
2
[SHIFT] [S-SUM] → [1]
∑ y [SHIFT] [S-SUM] → [2]
∑ xy [SHIFT] [S-SUM] → [3]
Mean of the x data [SHIFT] [S-VAR] [1]
Population standard deviation (x) [SHIFT] [S-VAR] [2]
Sample standard deviation (x) [SHIFT] [S-VAR] [3]
Mean of the y data [SHIFT] [S-VAR] → [1]
Population standard deviation (y) [SHIFT] [S-VAR] → [2]
Sample standard deviation (y) [SHIFT] [S-VAR] → [3]
Regression coefficient A [SHIFT] [S-VAR] → → [1]
Regression coefficient B [SHIFT] [S-VAR] → → [2]
For regression calculations other than quadratic regression:
Correlation coefficient r [SHIFT] [S-VAR] → → [3]
Estimate x [SHIFT] [S-VAR] → → → [1]
Estimate y [SHIFT] [S-VAR] → → → [2]
For quadratic regression:
∑ x
3
[SHIFT] [S-SUM] → → [1]
∑ x
2
y [SHIFT] [S-SUM] → → [2]
∑ x
4
[SHIFT] [S-SUM] → → [3]
Regression coefficient C [SHIFT] [S-VAR] → → [3]
Estimate x
1
[SHIFT] [S-VAR] → → → [1]
Estimate x
2
[SHIFT] [S-VAR] → → → [2]
Estimate y [SHIFT] [S-VAR] → → → [3]
9
References the Casio FX-300 MS User’s Guide Casio FX-300MS Scientific calculator