World Population Projections and Percent Changes

The video tutorial explains how to calculate the percent increase and decrease in world population from 2000 to 2150 using different projection data. It demonstrates the calculation process for both high and low projections, resulting in a 400% increase and a 33.33% decrease, respectively. Additionally, it highlights a common mistake in percentage reporting using an example from a PBS series audience report.

What was the approximate world population in the year 2000 according to the data presented?

• 5 billion

• 6 billion

• 7 billion

• 8 billion

What is the projected world population in 2150 using the high projection data?

• 25 billion

• 35 billion

• 20 billion

• 30 billion

How do you calculate the percent increase in population from 2000 to 2150 using high projection data?

• Multiply the original population by the projected population, divide by the original population, and multiply by 100.

• Add the original population to the projected population, divide by the original population, and multiply by 100.

• Subtract the original population from the projected population, divide by the original population, and multiply by 100.

• Divide the original population by the projected population, subtract from 100, and multiply by 100.

What is the percent increase in world population from 2000 to 2150 using high projection data?

• 400%

• 300%

• 200%

• 500%

What is the projected world population in 2150 using the low projection data?

• 4 billion

• 3 billion

• 5 billion

• 2 billion

How do you calculate the percent decrease in population from 2000 to 2150 using low projection data?

• Divide the projected population by the original population, subtract from 100, and multiply by 100.

• Multiply the projected population by the original population, divide by the original population, and multiply by 100.

• Add the projected population to the original population, divide by the original population, and multiply by 100.

• Subtract the projected population from the original population, divide by the original population, and multiply by 100.

What is the percent decrease in world population from 2000 to 2150 using low projection data?

• 25%

• 33.33%

• 50%

• 66.67%

In the PBS series report example, what was the reported audience percentage for the series 'The Civil War'?

• 9%

• 4%

• 17%

• 13%

What was the incorrect percent increase reported by John Tesh for the PBS series audience?

• 250%

• 300%

• 225%

• 200%

What is the correct percent increase from 4% to 13% in the PBS series audience example?

• 250%

• 200%

• 225%

• 125%