Finding Mean and Range

The video tutorial explains how to solve a problem involving mean scores and ranges for two classes. It covers calculating the total number of students, setting up and solving an equation to find the mean score for Class B, and determining the range of scores for all students. The tutorial also discusses the allocation of marks for each part of the problem and provides advice on careful calculation and practice.

How many students are there in total across both classes?

• 70

• 60

• 50

• 80

What is the mean score for Class A?

• 78

• 75

• 70

• 72.6

What is the calculated mean score for Class B?

• 68.5

• 70.5

• 72.5

• 74.5

What is the first step in rearranging the equation to find the mean for Class B?

• Divide by 32

• Subtract 2100 from both sides

• Multiply by 60

• Add 2100 to both sides

What is the highest score in Class A?

• 96

• 89

• 93

• 90

What is the range of scores for all students in both classes?

• 62

• 63

• 61

• 60

What is a key strategy for solving these types of problems?

• Guessing the answers

• Ignoring the given data

• Carefully arranging and processing the information

• Skipping the calculations