NATIONAL OPEN UNIVERSITY OF NIGERIA
PLOT 91, CADASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI – ABUJA
FACULTY OF MANAGEMENT SCIENCES
DEPARTMENT OF BUSINESS ADMINISTRATION
2019_1 EXAMINATION
COURSE CODE: MBA816 CREDIT UNIT: 3
COURSE TITLE: QUANTITATIVE METHODS FOR MANAGEMENT
TIME ALLOWED: 21/2HRS
INSTRUCTIONS:
- Attempt Question One (1) and any other three (3) questions
- Question 1 carries 25 marks, while the other questions carry 15 marks each.
- Present all points in coherent and orderly manner
1a. Discuss the following:
- Natural numbers. (3 marks)
- Whole numbers (3 marks)
iii. Integers (3 marks)
- Rational numbers (3 marks)
- Irrational numbers (3 marks)
- Change 86 to base 2. (6 marks)
- Evaluate the following:
(i) – 20 – (- 24) (2 marks)
(ii) – 13 – 16 (2 marks)
2a. List and discuss three basic types of fraction in mathematical analysis. (10 marks)
- Simplify the following: 5y – y (5 marks)
6 3
3a. Solve the equation
- X⁴ x X⁷ (3 marks)
- 4³ x 4² (3 marks)
- 3c³e² ÷ 2c²e² (3 marks)
- Discuss inverse variation (6 marks)
4a. Discuss geometric progression (5 marks)
- Find the solution to simultaneous equation by substitution:
The demand for bread in market x and y is given as follows
3x – 4y = 19 ……..(1) (5 marks)
x – 2y = 5 …….(2) (5 marks)
5a. Explain the basic concept of descriptive and inferential statistics. (5 marks)
- Discuss inductive, deductive and correlation statistics. (10 marks)
- Given the income distribution of a sample of 50 customers as follows:
Income Number of
(N’000s) Subscriber
20 – 30 20
31 – 41 15
42 – 52 10
53 – 63 5
(i) Compute the arithmetic mean of the incomes (6 marks)
(ii) Compute the Median income (9 marks)
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