Want to make sure my answer are correct

Question 10 1. When grouping data into classes it is recommended that we have less than 5 classes uestion 8 On between 5 and 20 classes 1. A method to identify the third quartile is Q3 - 75/100(n + G more than 20 classes 1) ? between 10 and 30 classes True Question 11 False 1. Those methods involving the collection, presentation, and characterization of a set of data to properly de- uestion 9 scribe the various features of that set of data are called: 1. The process of using sample statistics to draw conclu inferential statistics sions about population parameters is called total quality management sampling inferential statistics descriptive statistics C experimentation G primary sources 5 points Descriptive statistics C descriptive statistics