bwBASIC/NBS2/P140.run

PROGRAM FILE 140: RUNS TEST FOR THE RND FUNCTION.                               
    ANSI STANDARD 8.4                                                           
                                                                                
SECTION 140.1: RUNS TEST FOR THE RND FUNCTION.                                  
                                                                                
THIS PROGRAM COUNTS HOW MANY RUNS OF A GIVEN LENGTH OCCUR                       
WITHIN A SERIES OF RANDOM NUMBERS. A RUN IS A SUBSEQUENCE                       
OF THE NUMBERS WITHIN WHICH THE VALUES ARE IN ASCENDING                         
ORDER. THE RESULTS ARE COMPARED WITH THE EXPECTED OUTCOME                       
FOR UNIFORM RANDOM NUMBERS, AND CHI-SQUARE IS COMPUTED                          
AND DISPLAYED. ALL RUNS OF LENGTH >= 6 ARE CONSOLIDATED                         
INT ONE CATEGORY.                                                               
                                                                                
***** THIS TEST IS INFORMATIVE ONLY *****                                       
                                                                                
                  BEGIN TEST                                                    
                                                                                
RUN LENGTH     ACTUAL COUNT   EXPECTED COUNT                                    
 1              823            833.335                                          
 2              1049           1041.66                                          
 3              449            458.334                                          
 4              135            131.945                                          
 5              33             28.7698                                          
>= 6            4              5.9524                                           
                                                                                
FOR 6 D.F., SHOULD HAVE 1.63539 <= CHI-SQ <= 12.5916                            
(5% TAIL ON EACH END.)                                                          
                                                                                
ACTUAL CHI-SQ =  6.66211                                                        
                                                                                
*** INFORMATIVE TEST PASSED ***                                                 
                                                                                
                 END TEST                                                       
                                                                                
END PROGRAM 140