DI: Campus Placement Salaries

The stacked chart provides salary ranges for student bands (bottom 25, 26th-median, median-75th, top 25) but not individual student salary distributions inside each range. Thus exact student count in 20-30 lacs cannot be determined.

Comparing median salary of year $t$ with mean salary of year $t-1$: 2012: Median(2012) = 20, Mean(2011) = 10 $\implies$ increase = $100\% \ge 60\%$. 2014: Median(2014) = 31, Mean(2013) = 16 $\implies$ increase = $93.75\% \ge 60\%$. Thus years 2012 and 2014 satisfy the condition.

Since exact distributions within quartiles are not provided, exact averages of top 25% and bottom 25% cannot be determined with precision for all years.

New Mean = $\text{Mean} \times \frac{100}{100 - \text{unplaced}}$. 2008: $16 \times \frac{100}{91} = 17.58 > 14$ (Median) 2010: $19 \times \frac{100}{80} = 23.75 > 22$ (Median) 2013: $16 \times \frac{100}{96} = 16.67 > 16$ (Median) Thus in 3 years (2008, 2010, 2013), the new average salary exceeds the median salary.