Casio FX-85ES PLUS Manual De Usuario

E-19

 

                           

(STAT)(1-VAR)

 

                 1 

 2  3  4  5 AC 

  

 

1 

 2  3  2  

 

 

(STAT)(Var)(M) 

 

 

(STAT)(Var)(S

)

 

Results:  Mean: 3     Population Standard Deviation: 1.154700538 

 

To calculate the linear regression and logarithmic regression  

 

   correlation coefficients for the following paired-variable data and  

 

   determine the regression formula for the strongest correlation: (

,  

 

   

) = (20, 3150), (110, 7310), (200, 8800), (290, 9310). Specify Fix  

 

   3 (three decimal places) for results. 

 fx-82/85/350ES PLUS: 

(SETUP)A(STAT)(OFF)

 fx-95ES 

PLUS: 

(SETUP)A(STAT)(OFF)

 

                       

(SETUP)(Fix)

 

                          

(STAT)(A + BX)

 

            20 

 110  200  290 AC

  

3150 

 7310 8800  9310  

 

 

(STAT)(Reg)(r) 

 

          

(STAT)(Type)(In X)

 

 

(STAT)(Reg)(r) 

 

 

(STAT)(Reg)(A) 

 

 

(STAT)(Reg)(B) 

Results:  Linear Regression Correlation Coefficient: 0.923 
              Logarithmic Regression Correlation Coefficient: 0.998
              Logarithmic Regression Formula: 

 = –3857.984 + 2357.532ln

Based on the regression formula obtained by paired-variable statistical 
calculation, the estimated value of 

 can be calculated for a given 

-value. 

The corresponding 

-value (two values, 

1

 and 

2

, in the case of quadratic 

regression) also can be calculated for a value of 

 in the regression 

formula. 

 

To determine the estimate value for 

 when 

 = 160 in the  

 

   regression formula produced by logarithmic regression of the data  

 

   in 

. Specify Fix 3 for the result. (Perform the following operation  

 

   after completing the operations in 

.)

 

 

 160 (STAT)(Reg)(L) 

Result:    8106.898

Important:  Regression coefficient, correlation coefficient, and estimated 
value calculations can take considerable time when there are a large number 
of data items.

C