BD309
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1.What does the difference between mean and median indicate about the data distribution?Use Excel
2. What are the interpretation of above result (ad.1) ?
Most supermarkets have values (e.g., turnover, revenue, or other measures) around 150, but there are some supermarkets with higher values (such as Hypermart = 195 and Transmart = 182.5) that cause the average to be greater than the median. Therefore, this distribution is unbalanced, and the presence of high values causes the average to be slightly higher than the median.
3. If AEON Mall BSD’s sales increase to Rp180 billion next year, how will it affect the mean?
The mean will increase due to the addition of new high values. The median will not change much because it only depends on the location of the data in the middle, not on how large the value is.
4. Which measure (mean, median, or mode) best describes the ‘typical’ supermarket’s performance and why?
The median is not affected by extremely high values (outliers) such as Hypermart and Transmart, which have very high values.
The average can be misleading in striking data, as it can increase simply because of a few large values.
The mode (the most frequently occurring value) is not appropriate here because the data is continuous and all values are different.