You just started your summer internship as a Business Analyst at Mars Inc, one of the world's leading manufacturers of chocolate. Your are handed one single task for the next 3 months - find out what are the key determining factors of a successful chocolate product.

As your time with the company will be short, there will be no time to collect new data. For this project, you will rely on the company's product and sales database. 

a) What is the population of interest?

b) What is the unit of analysis?

c) What is the sampling method used? Does your data represent the intended population?

d) What is the data collection method used? Is this primary or secondary data?

e) Is this research project descriptive or causal? Why?

f) List 5 variables that you would collect (at least two quantitative and two qualitative). For each variable indicate its type and whether it is an explanatory or a response variable.