Question

The U.S. Weather Bureau has a station on Mauna Loa in Hawaii that has measured carbon dioxide levels since 1959. At that time, there were 305 parts per million of carbon dioxide in the atmosphere. In 2005, the figure was 383 parts per million. Find the increase in carbon dioxide levels and the percent of increase. Round to the nearest tenth of a percent.

Answer 1

The absolute change is 383 - 305 = 78 parts per million.

The percent of increase is 20.4%

What is about change?

Absolute change refers to the numerical difference between two values or measurements, without considering the direction of the change. It is the absolute value of the difference, meaning it gives the magnitude of the change regardless of whether it is an increase or a decrease.

In 1959, there were 305 parts per million of carbon dioxide.

In 2005, it was 383 parts per million.

So the absolute change is 383 - 305 = 78 parts per million.

Relative change is = 78/383 * 100 = 20.4%