三 、 The number sick days due to colds and flu in a class wasrecorded by a sample of 9 students. These data are:5 7 1 3 6 70 5 9 31. Write down the names of the three statistics that can measurecentral location for the data. (5 分 ; Note: You do not need tocalculate the value of the three statistics.)2. Which one of the above three statistics best describes the sickdays in the class. Explain your answer. (5 分)