Analysis - Phase 1

Analysis was done in 2 phases. The data was first analyzed in accordance with hypothesis 1 (year-over-year). The data grouped by year was plotted to create a visual display. Based on the year over year plot, it appears as though there is a trend in the data. However, a positive conclusion could not be made based on this plot alone. Next, a regression analysis was performed. The regression analysis revealed a linear trend. There is a negative correlation in the data, meaning that NO2 pollution is decreasing each year.

Fig1 Fig1

Based on the analysis, we found that there is a downward linear trend in pollution year over year. NO2 pollution appears to be decreasing overall.

Visualizations