Casio FX-9860G sin, n –, n –, n –, + cxi, 1 + ae, + dxi + e)), (yi – (axi + b)), (yi – (axi + bxi, (yi – (axi + bxi, Σ (yi – (a + b ln xi ))2, Σ (ln yi – (ln a + bxi ))2

6-4-4

Performing Statistical Calculations

1

n

• Linear Regression ...

Σi=1

2

MSe = n – 2

(yi – (axi + b))

1

n

• Quadratic Regression ...

MSe =

Σ (yi – (axi 2 + bxi + c))2

n – 3

i=1

1

n

• Cubic Regression ...

Σi=1

3

2

2

MSe = n – 4

(yi – (axi + bxi

+ cxi + d ))

1

n

• Quartic Regression ...

Σi=1

4

3

2

2

MSe = n – 5

(yi – (axi + bxi

+ cxi

+ dxi + e))

1

n

• Logarithmic Regression ... MSe =

Σ (yi – (a + b ln xi ))2

n – 2

i=1

1

n

• Exponential Repression ... MSe =

Σ (ln yi – (ln a + bxi ))2

n – 2

i=1

1

n

• Power Regression ...

Σi=1

2

MSe = n – 2

(ln yi

– (ln a + b ln xi ))

1

n

• Sin Regression ...

MSe =

Σi=1

(yi – (a sin (bxi + c) + d ))

2

n – 2

1

n

C -bxi

2

• Logistic Regression ...

MSe =

Σ

yi –

n – 2

i=1

1 + ae

uEstimated Value Calculation for Regression Graphs

The STAT mode also includes a Y-CAL function that uses regression to calculate the estimated y-value for a particular x-value after graphing a paired-variable statistical regression.

The following is the general procedure for using the Y-CAL function.

1.After drawing a regression graph, press !5(G-SLV)1(Y-CAL) to enter the graph selection mode, and then press w.

If there are multiple graphs on the display, use f and c to select the graph you want, and then press w.

• This causes an x-value input dialog box to appear.

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