Understanding Ratios and Their Notation

The video tutorial by AJ Speller introduces the concept of ratios, emphasizing their importance in comparing quantities. It explains different types of ratios, such as part-to-part and part-to-whole, and their notations. Using a survey example, the video demonstrates how to calculate ratios, including simplifying them. The tutorial covers various examples, ensuring a comprehensive understanding of ratio calculations. The video concludes with a summary and appreciation for the viewers.

What is a ratio primarily used for?

• To compare two quantities by addition

• To compare two quantities by division

• To compare two quantities by subtraction

• To compare two quantities by multiplication

Why is the order important in a ratio?

• Because it determines the operation used

• Because it affects the comparison result

• Because it changes the ratio type

• Because it alters the notation

Which of the following is a type of ratio grouping?

• Part-to-fraction

• Whole-to-fraction

• Part-to-part

• Whole-to-whole

What does 'p2w' stand for in ratio groupings?

• Part-to-whole

• Part-to-part

• Whole-to-part

• Whole-to-whole

In a part-to-whole ratio, what does the 'whole' represent?

• The product of parts

• The total of one part

• The sum of all parts

• The difference between parts

Which notation is NOT used for expressing ratios?

• Decimal

• Word 'to'

• Colon

• Fraction

Which of the following is a correct representation of a ratio using a colon?

• 8.5

• 8:5

• 8/5

• 8 to 5

If a ratio is expressed as 8/5, what type of notation is this?

• Word 'to'

• Colon

• Decimal

• Fraction

How many people own Androids if 16 own iPhones out of 26 surveyed?

• 8

• 14

• 10

• 12

What is the simplified ratio of iPhone users to Android users?

• 4:3

• 5:8

• 8:5

• 3:4