Problem Set: Chapter 01 Introduction to Statistics Attempts Average / 7 11. Statistical notation A sociologist is studying trends in childbearing. He asks expectant parents in different parts of the country about the number of children In their family of origin and the total number of children they plan to have. On an average day of data collection, he gets the results shown in the first three columns of the following table. In this table, fill in the missing values in the XY column, and then calculate EXY. Parent Children in Family of Origin (X) Number of Planned Children (Y) XY A 9 W W B W C 6 W N A D 2 N W A m EXY =