In your own words, differentiate the following statistical terminologies with some examples.

1. Students are able to apply appropriate business research methodologies to support
decision-making process.
2. Students are able to identify and apply valid statistical techniques in a given scenario to
solve business problems.
3. Students are able to justify and interpret the results of a statistical analysis in the context
of critical reasoning for a business problem solving.
4. Students are able to apply statistical knowledge to summarize data graphically and
statistically, either manually or via a computer package.
5. Students are able to justify and interpret statistical/analytical scenarios that best fit
business solution.
6. Students are able to justify value and limitations of the statistical techniques to business
decision making.
Description: Each week students were provided with three tutorial questions of varying degrees of
difficulty. These tutorial questions are available in the Tutorial Folder for each week on Blackboard.
The Interactive Tutorials are designed to assist students with the process, skills and knowledge to
answer the provided tutorial questions. Your task is to answer a selection of tutorial questions for
weeks 2 to 6 inclusive and submit these answers in a single document.
The questions to be answered are;
Week 2
Question 1 (10 marks)
In your own words, differentiate the following statistical terminologies with some examples.
a. Population Parameter and Sample Statistic (2.5 marks)
b. Descriptive Statistics and Inferential Statistics (2.5 marks)
c. Nominal Scale and Ordinal Scale (2.5 marks)
d. Primary Data Source and Secondary Data Source (2.5 marks)
Week 3
Question 2 (10 marks)
Data showing the population by state in millions of people follow (The World Almanac, 2012). The
dataset in Excel file 2012Population.xlsx.
a. Develop a frequency distribution, a percent frequency distribution, and a histogram.
Use a class width of 2.5 million. (4 marks)
b. Does there appear to be any skewness in the distribution? Explain. (3 marks)
c. What observations can you make about the population of the 50 states? (3 marks)

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