Case Study
The current dataset is related to the basic items from grocery section of 4 different hypermarkets in Malaysia (Giant: 1, Tesco : 2, Aeon :3 , Mydin : 4). Data were collected from three different sates (Selangor: 1, Penang: 2, Pahang: 3) and from Metropolitans (1) and other places (2). You are appointed as a senior consultant of Ministry of Domestic Trade, Co-operatives and Consumerism – KPDNKK and asked to write the official report based on the collected data.
Task:
- Visually present data for the prices of Basic Staple basket at different supermarkets. Calculate descriptive statistics for the prices of Basic Staple basket at different supermarkets. Comments on the location, shape and variability of those distributions.
- Visually present data for the prices of Basic Staple basket across three States among the supermarkets. Calculate descriptive statistics for the prices of Basic Staple basket across three States among the supermarkets. Comments on the location, shape and variability of those distributions.
- Visually present data for the prices of Basic Staple basket Basic Staple basket at different locations among the supermarkets. Calculate descriptive statistics for the prices of Basic Staple basket at different locations among the supermarkets. Comments on the location, shape and variability of those distributions.
- Visually present data for the prices of Basic Staple basket of Giant stores in three states. Calculate descriptive statistics for the prices of Basic Staple basket of Giant stores in three states. Comments on the location, shape and variability of those distributions.
Part Two
You are required to demonstrate the following knowledge and skills in this part two
- Demonstrate the use of statistical techniques in Business data;
- Demonstrate how to conduct hypothesis tests about mean, proportions and difference of means;
- Demonstrate the use of computer software to get necessary output.
- Demonstrate the skills of preparation of a managerial report
Task:
- During the inquiry it was argued that there are differences in supermarket prices at different locations. How do you test that there is a significant difference of average prices at different locations for supermarkets? What do you find from your analysis?
- Giant claims that they have a national pricing policy; the policy excludes fresh fruit, vegetables and regional bakery lines. How do you test whether there is significant difference of average prices of Giant stores in different locations? What do you find from your analysis?
- Test the claim that average price of Basic Staple basket in Penang is significantly different compared to the in Selangor.
- Two larger supermarket chains, Aeon and Tesco control nearly 70% of the grocery market. During the inquiry it argued that the larger buying power of those chains makes them cheaper than other supermarkets. On the other hand, another group argued that there is no significant difference of grocery prices among supermarkets. Using the data collected, how do you test the claim that there is no significant difference of the average prices for the Basic Staple basket at different supermarkets? What do you find from your analysis?
- During the inquiry it was argued that there is a difference in supermarket prices across States due to the different size of the markets in each State, transportation costs and other costs. How do you test that there is a significant difference of average prices across three States? What do you find from your analysis?
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