In a statistic class, 10 scores were randomly selected with the following results were obtained : 74, 73 , 77 , 77 71, 68, 65 , 77 , 67, 66 What is the third quartile ?26. In a statistic class, 10 scores were randomly selected with the following results were obtained : 74, 73 , 77 , 77 71, 68, 65 , 77 , 67, 66 What is the first quartile ?