need some help please

1. In the table below there are production costs within a corporation. Calculate average production costs among departments Department Production costs per one unit of a Average volume of production, product, $ units per month 1 10 2000 2 12 1800 3 14 3000 Total 2. Calculate average level of GDP and average growth tempo of GDP during the analyzing period (2007 - 2019), billion. $ 33 247, 5 41 276, 8 38 807, 2 46 308, 5 60 114, 0 68 103, 4 72 985, 7 79 030, 0 83 087, 4 85 616, 1 91 843, 2 104 629, 6 110 046, 1 3. There are data on companies' turnover Groups of companies on turnover, Xi, The number of companies, thousand $ % (Wi) 100-110 15 110-120 20 120-130 10 130-140 12 140-150 25 150-160 18 Total 100 Calculate: 1. Average level of turnover 2. Mode turnover 3. Median turnover 4. D1 5. D9 6. KD 7. Is Regular or irregular interval range presented? Specify the key differences in Mode calculation between regular and irregular interval range. Make conclusions on each variable