Let ,ni (i=1,2,3) denote the midterm score and number of students respectively for A i th section .
We know ,
According to question :
Question 2 (1 point) There are three sections of an introductory course. The following table displays...
1. Ms. Jackson has three sections of the course "Introduction to Statistics.” The midterm results reveal that class A has an average of 82, class B has an average of 88, and class C has an average of 92. If there were 20 students in class A, 25 students in class B, and 27 students in class C, what is the combined mean (the average for all the three classes)? Show your work. 2. In your Biology class, your final...