代写金融数学 The volatility of stock can be calculated by calculating the standard deviation of stock return, i.e. STD (stock_ret); the beta of stock can be calculated by CAPM formula
python医学分析代写 Each patient is identified using an integer identifier (e.g.56374).Each symptoms is a string such as “headache” or“fever”.Each diagnostic is a string such as “cold” or“meningitis”Symptoms for a given patient are stored in a tuple of two sets: the first set contains the symptoms that are present in the patient; the second set contains the symptoms that are observed not to be present (i.e.absent).