そく８ - 経済統計練習帳

package base;
 
 
 
public class cycle {
 
    double[] p=new double[6];
    int point;
    int[] base=new int[5];
  int out;  
 
    int makedata(){
 
         point=0;
 
 
 
 
  int inn;
 
  for(inn=1;inn<10;inn++){ 
 play();
  } 
 
 
  return point;
    }
 
  void play(){
 
  out=0;
 
 
 
 int s;
 
  for(s=1;s<4;s++){
  base[s]=0;
  }
 
  while(out<3){
 
  hit();
 
}
 
 
 
 
 
}
 
 
    void one(){
 
  if(base[3]==1)point=point+1;
  if(base[3]==1)base[3]=0;
  if(base[2]==1)base[3]=1;
  if(base[2]==1)base[2]=0;
  if(base[1]==1)base[2]=1;
  if(base[1]==1)base[1]=0;
  base[1]=1;
 
 
 
}
 
void two(){
 
  if(base[3]==1)point=point+1;
  if(base[3]==1)base[3]=0;
  if(base[2]==1)point=point+1;
  if(base[2]==1)base[2]=0;
  if(base[1]==1)base[3]=1;
  if(base[1]==1)base[1]=0;
  base[2]=1;
 
 
 
}
 
void three(){
 
  if(base[3]==1)point=point+1;
  if(base[3]==1)base[3]=0;
  if(base[2]==1)point=point+1;
  if(base[2]==1)base[2]=0;
  if(base[1]==1)point=point+1;;
  if(base[1]==1)base[1]=0;
  base[3]=1;
 
 
 
}
 
void four(){
 
  if(base[3]==1)point=point+1;
  if(base[3]==1)base[3]=0;
  if(base[2]==1)point=point+1;
  if(base[2]==1)base[2]=0;
  if(base[1]==1)point=point+1;;
  if(base[1]==1)base[1]=0;
  point=point+1;
 
 
 
}
 
 
 
void hit(){
 
double r1=Math.random();
 
double[] q=new double[6];
 
 int s;
  q[0]=0;
  for(s=1;s<6;s++){
  q[s]=q[s-1]+p[s];
  }
 
  int sxs=1;
  for(s=1;s<6;s++){
  if(r1>q[s])sxs=s+1;
  }
 
  if(sxs==1)one();
   if(sxs==2)two();
   if(sxs==3)three();
   if(sxs==4)four();
  if(sxs==5)out=out+1;
 
}
}
 
 
 
 
package base;
 
 
public class pro {
 
     double[] p=new double[6];
    int[] point=new int[10001];
  double avg,sig;
 
    public static void main(String[] args) {
        pro t=new pro();
    }
    pro(){
 
        p[1]=0.1;
  p[2]=0.1;
  p[3]=0.1;
  p[4]=0.1;
  p[5]=0.6; 
 
  int px=0;
 
  int tr;
 
  for(tr=1;tr<10001;tr++){
  cycle sub=new cycle();
  sub.p=p;
  point[tr]=sub.makedata();
  }
 
  int s;
  double a1=0;
  for(s=1;s<10001;s++){
  a1=a1+point[s];    
  }
  a1=a1/10000;
 
  double s1=0;
   for(s=1;s<10001;s++){
   s1=s1+(point[s]-a1)*(point[s]-a1);   
 
   }
  s1=Math.sqrt(s1/10000);
 
  System.out.println(a1+"△"+s1);
 
 
 
 
 
    }
 
 
 
}