Math 105 3.A

Distinguish the difference between absolute and relative difference.

Absolute difference is the actual difference between the compared value and the reference value. Relative difference describes the size of the absolute difference in comparison to the reference value and can be expresses as a percentage.

What is the difference between the terms "precent" and "percentage points"?

Percent is used to describe a relative change or difference. Percentage points are used to describe an absolute change or difference.

What is the third way to use percentages?

Percentages can be used to compare two things. For example, the car costs 25% more but gets 10% more miles per gallon.

What is a second way to use percentages?

Percentages can be used to describe change in something. For example, the cost of milk rose 5% within the past month.

What is one way to use percentages?

Percentages can be used to express a fraction of something. For Example, out of 15,000 employees, 3% lost their jobs

Explain the difference between the key words 'of and 'more than' when dealing with percentages.

The key word 'more than' is used to express the relative change between the referenced value and the compared value. The key word 'of is used to express the ratio of the compared value to the referenced value.

Can a percentage change in population be negative?

Yes, it can be negative if the data reflects that.

What is the equation for absolute change?

absolute change= new value-reference value

What is the equation for relative change?

relative change=((new value-reference value)/reference value) *100%