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Homework Assignment 3 Show all your work by pasting Screenshots of your Excel workbook for appropriate questions. Upload the Excel workbook in addition to your response. 1. Import the airline_delay_causes_2020.csv" dataset into Excel. (This shows the "Airline On-Time Statistics and Delay Causes". Each row represents the data for one airport served by one carrier in a given month. Answer following questions. You may use the functions we discussed in the class. You need to provide screen captures with the answers. If you used a formula, you need to state the completed formula (copy the formula and paste it) with the answer to earn full credit. (Answer alone, even if correct, might not earn you full credit). (10 points each) a. How many flights were completed in each quarter of 2020? (Show the number of completed flights for each quarter separately. You can show only one formula and a screenshot to earn credit. No need to show four formulas and screenshots). Note: 01: January - March, Q2 = April - June, etc. b. How many flights were cancelled or delayed due to carrier related issues (carrier_ct) during June to December? c. How many flights were cancelled or delayed due to non-carrier related issues (weather_ct, nas_ct, security_ct, late_aircraft_ct) during June to December? d. What percentage of flights were completed on-time (= total - all delayed or cancelled or diverted flights) in 2020? e. What is the leading cause for flight delays (by total delayed minutes) in 2020? You need to calculate the total delay in minutes for delay causes (carrier, weather, NAS, security late arrival aircrafts) to answer this question f. What is the least contributing cause for flight delays (by total cases) in 2020? You need to calculate the total count of delayed flights for delay causes (carrier, weather, NAS, security, late arrival aircrafts) to answer this question. g. Extra credit (5 points): What trends can you observe in the number of completed flights in 2020 by each quarter (that you calculated in (a))? What are the reasons for the variations that you observe? 2. Use the above dataset ("airline_delay_causes_2020.csv") to answer following questions. You Focus 51F Clear