ISSS608 2017-18 T3 Assign Saurav Jhajharia (Conclusion)
VAST Challenge 2018 MC2: Like a Duck to Water
Q1
1. The number of readings has increased over the years. Not sure if there is a direct correlation between the number of readings collected and the increase in contamination as the method of data collection is not known (manual or automatic).
2. There is a strange coincidence of visible patterns between some chemicals across all locations as their range of values, mean, median, and upper and lower quantile values are almost exactly the same.
3. There are two sets of locations where the range of chemicals and its values are almost 100% identical. This is extremely strange considering these values are taken over a period of 17 years and two locations showing the exact same pattern of chemical distribution is bizarre.
4. The collection of data at different locations can be divided into three segments: One, where data was collected from 2009 onwards only, two, where data range is extremely narrow, and three, where data range is extremely wide.
Q2
1. There are many chemicals which show peaks at random times of the year, every year. There isn't a directly visible pattern in these peaks and they occur for different chemicals at different locations. This indicates that these changes in chemical increase/decrease might not be due to weather patterns but other reasons (such as chemical contamination).
2.
