【简答题】In a statistics class, 10 scores were randomly selected with the following results: 74, 73, 77, 77, 71, 68, 65, 77, 67, 66 What is the 90th percentile? ________ What is the third quartile? ________ Wh...
【简答题】25th May ---- 30th May Design a questionnaire and carry out a survey on the campus; 31st May ---- 3th June yze the survey statistics and write a report(including a word d...