Quantitative Methods Cat 1 Question Paper

Quantitative Methods Cat 1 

Course:Diploma In Supplies Management (Supplies Management)

Institution: Machakos University question papers

Exam Year:2010



Answer all questions
1.(a) Compute the 4th and 7th decile in the following data.(6 marks)
Earnings Frequency
0-500 5
500-1000 9
1000-1500 11
1500-2500 33
2500-3500 37
3500-4000 19
4000-5000 9

(b) Quartiles for grouped data can also be obtained using the graphical method. Give the four steps involved in computing the quartiles.(4 Marks)

2.(a) What is the relationship between variance and standard deviation.(2 Marks)
(b)What is coefficient of variation.(Briefly explain)(4 marks)
(c) Given the following 2 data sets, identify the one which has more variability using the coefficient of variation. (4 Marks)
Data set 1: 160, 130, 120, 100,50
Data set 2: 80, 130, 60, 170, 255

3.(i) Define the following terms giving an example in each.
(a) Class boundaries. (2 marks)
(b) Class width.(2 marks)
(c) Class intervals(limits) (2 Marks)
(d) Ordinary frequency distribution.(2 marks)
(e) Relative frequency distribution. (2 Marks)






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