Deductions for Assigment 4 

- Question 1 - Version 1:
  After delete CA if student places BO and ER together - in the same 
  node (discount of -2/4)

- Question 1 - Version 2:
  After delete CA if student places BO and ER far apart - in different 
  nodes (discount of -2/4)

- Question 3 - Any item: 
  if student only writes the equation, but did not do
  the calculations (with no result)
  (Item A: discount of -1/2)     
  (Items B, C, D and E: discount of -4/5)     
  (Items F: discount of -2/3)     

- Question 3 - Item D:
  if student uses the formula N(1-p(0)) instead of N(1-p(0)-p(1)) to 
  calculate the result (discount of -4/5)     

- Question 3 - Item F: 
  In the equation, if student uses 10,000 as number of records instead of 8,000
  (discount of -1/3)         

- Question 5 - Item A:
  if students makes three mistakes in the table 
  (discount of -3/5)

- Question 5 - Item B: 
  if student calculates the search length of CAT as 3 instead of 4 
  (discount of -1/5)