Student Name: VR

Assignment for IBA Business Statistics
IBA134

All numerical calculations and graphs/plots should be done using EXCEL.

Student Name:

Question 1

What type of survey method the researcher could use and why?
What sampling method could the researcher use to select his/her sample and why?
What are the variables the researcher would consider collecting data for the purpose of the analysis and why? Identify the data types for the variables.

a) The survey method recommended would the personal interview. This would be more labour intensive but has a better opportunity to get the desired information. Whereas other methods such as telephone where a lot of people refuse or self-administered questionaries where the response rate is low.

b) The researcher could use the “simple random sample” method. This method would be a better approach to selecting members of the population that would fit the survey criteria.

c) Although the question sounds simple ie hours to dollars debt there may be other factors such as does TV hours watched influence the debt owed by mortgages etc. or whether food consumables are increased by hours watched. What type of debt?
Variables:
Hours spent watching TV – Numerical
Dollars total in debt – Numerical
Mortgage y/n - Nominal
Members included in household that watch TV? - Numerical
Members in household that incur the debt – Numerical

d) The storage of the data could be of concern so the survey would have to be anonymous and confidentiality on the data.
The interviewed would have to be upfront and accurate with the information they give.

Question 2
a)
The text book has a table 2.10 on page 46 that proposes the guidelines for determining the class size given the number of observations.
From this table given that the number of observations is 430 would be somewhere between 9 and 10.