NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
APRIL 2019 EXAMINATION

COURSE CODE: CIT 412

COURSE TITLE: MODELLING AND SIMULATION

CREDIT: 2½  Units

TIME ALLOWED: 3 Hours

INSTRUCTION: Answer Question ONE (22 marks) and any other FOUR Questions (12 marks)

QUESTION ONE

1a.        Write short notes on the following.       

1. Percentile    [2 marks]                    
2. Conceptual model  [2 marks]
3. Modelling and Simulation  [2 marks]
4. Continuous Simulations [2 marks]
5. Discrete Random Variable  [2 marks]

1b. List five (5) properties of a random Number generator   (5 marks)

1c. What is the difference between Continuous and Discrete Distribution? (3 marks)

1d. Name any 4 types of Random Walks  (2 marks)

1e. What is ANOVA? (2 marks)

Question Two

2a.Suppose the output of the program of example 3 is: HHTHHTTTHH and that there are two players X and Y involved in the tossing of the coin. Given that player X wins N50.00 from player Y if a head appears and loses it to player Y if a tail appears. Determine who won the game and by how much.  [8 marks]

2b.State the three perspectives of data models and the relationship between them [4 marks]

Question Three

1. Outline FOUR (4) steps or procedure involved in modelling [8 marks]
2. What is Data Modelling?  [4 marks]

Question Four

1. Outline the steps followed in Constructing a Simulation Model [5 marks]
2. Differentiate between Inferential and Descriptive Statistics [7 marks]

Question Five

1. Enumerate five advantages of using a model      [5 marks]
2. What are four (4) factors considered in evaluating a model? [4 marks]
3. Describe Idealization as a model  [3 marks]

Question Six

1. List and explain any six (6) types of models giving one examples each [12 marks]