Commons Math example source code file (NumAcc2.txt)

This example Commons Math source code file (NumAcc2.txt) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

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The Commons Math NumAcc2.txt source code

File Name:     NumAcc2.dat

File Format:   ASCII
               Header          : lines  1 to   60     (=   60)
               Certified Values: lines 41 to   43     (=    3)
               Data            : lines 61 to 1061     (= 1001)

Dataset Name:  NumAcc2

Description:   This is a constructed/fabricated data set
               to test accuracy in summary statistic calculations.
               The numbers are 2-digit floating point values and
               differ only in the last decimal place.
               Note--by construction, this data set has
                     sample mean                  =  1.2   (exact)
                     sample standard deviation    =  0.1   (exact)
                     sample autocorrelation coef. = -0.999 (exact)

Stat Category: Univariate

Reference:     Simon, Stephen D. and Lesage, James P. (1989).
               Assessing the Accuracy of ANOVA Caluclations
               in Statistical Software", Computational
               Statistics & data Analysis, 8, pp. 325-332.


Data:          Constructed
               1    Response           : y
               0    Predictors
               1001 Observations

Model:         Average Level of Difficulty
               2    Parameters         : mu, sigma
               1    Response Variable  : y
               0    Predictor Variables

               y    = mu + e


                                                  Certified Values
Sample Mean                                ybar:  1.2   
Sample Standard Deviation (denom. = n-1)      s:  0.1    
Sample Autocorrelation Coefficient (lag 1) r(1):  -0.999 

Number of Observations:                             1001













Data: Y
---------
     1.2
     1.1
     1.3
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