Refer to the file hkex.Rds. Construct a new column in the table and call it VWAP by dividing the monthly turnover in dollar amount (TURN_DOL) by monthly turnover by share (TURN_SH). Construct a new table by finding the monthly return using closing and VWAP respectively. Then use the ANOVA model r=+i+, where i is the effect for CLOSING vs VWAP. Then use the ANOVA model r=+i+j+k+, where j is the stock effect and k is the month effect. Compare the results and conclude whether VWAP return and CLOSING return are significantly different and by how much (annualized). Refer to the file hkex.Rds. Construct a new column in the table and call it VWAP by dividing the monthly turnover in dollar amount (TURN_DOL) by monthly turnover by share (TURN_SH). Construct a new table by finding the monthly return using closing and VWAP respectively. Then use the ANOVA model r=+i+, where i is the effect for CLOSING vs VWAP. Then use the ANOVA model r=+i+j+k+, where j is the stock effect and k is the month effect. Compare the results and conclude whether VWAP return and CLOSING return are significantly different and by how much (annualized)