Из разных фирм было подано следующее количество документов: 10,20,20,5,15,20,5,10,20,5, построить статистический ряд распределения и полигон частот, найти моду, медиану, среднее арифметическое, математическое ожидание и дисперсию, построить чистограмму частот

Для начала построим статистический ряд распределения:

| Количество документов | Частота | |-----------------------|---------| | 5 | 3 | | 10 | 2 | | 15 | 1 | | 20 | 4 |

Теперь построим полигон частот:

  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *    
  |    *