70+ Family Quantitative methods Version 1

Version 2
Section A (10marks)
Write True or False for the Q1 - Q5 in your Answer book.
Surname
Q1. The number of books found in library is quantitative ratio data. Answer:
[2 marks]
Q2. Empirical studies indicate that about 99% of the normally distributed data lie within 3 standard deviation from the mean value.
[2 marks]
Answer:
Q3. For the dataset (5, 4, 5, 6, 5), the data are normally distributed. Answer:
[2 marks]
Q4. The difference between the extreme observations is called range. Answer:
[2 marks]
Q5. The nominal and ordinal scales of measurements are qualitative data.
[2 marks]
Answer:
Section B (90marks)
Q6. List and define 4 types of scale of measurement.
____________________________________________________________________
[15 marks]
In Q7-Q10 refer to the data: A convenience store has collected the following data on spring sales of tin openers:

Number of tin openers sold	2	3	4	5	6	7	8	9	10
Number of days	2	3	5	6	7	4	5	3	2

Q7. Identify the type of data in terms of qualitative/quantitative, primary/secondary, raw/aggregate, untabulated/tabulated(unrouped)/tabulated(grouped), cross-section/time series data to you.

Briefly explain why.
__________________________________________________ [20 marks]
Q8. Calculate:
a) Range [2 marks]
b) Mean [5 marks]
c) Mode. [4 marks]
d) Median.[4 marks]
Q9. Calculate the standard deviation of the data.
Q10. Display the data as a cumulative frequency curve.