Regression Calculations | REG |
Use the Fkey to enter the REG Mode when you want to perform statistical calculations using regression.
REG .......................................................................................... | F F 2 |
• Entering the REG Mode displays screens like the ones shown below.
|
|
| r |
|
|
| |
L i n | Log | Exp | Pw r | I nv Quad | |||
| |||||||
1 | 2 | 3 | 1 | 2 | 3 | ||
e
•Press the number key ( 1, 2, or 3) that corresponds to the type of regression you want to use.
1(Lin) : Linear regression
2(Log) : Logarithmic regression
3(Exp) : Exponential regression
r1(Pwr) : Power regression
r2(Inv) : Inverse regression
r3(Quad) : Quadratic regression
•Always start data input with A B1(Scl) <to clear statistical memory.
•Input data using the key sequence shown below.
•The values produced by a regression calculation depend on the values input, and results can be recalled using the key operations shown in the table below.
To recall this type of value: | Perform this key operation: |
Σx2 | A U1 |
Σx | A U2 |
n | A U3 |
Σy2 | A Ur 1 |
Σy | AUr2 |
Σxy | AUr3 |
o | A X1 |
xσn | A X2 |
AX3 | |
p | A Xr 1 |
|
|