12/5/24 Practice 3-4 Percent Error

Front

What is percent change?

Back

Percent change is a measure of how much a quantity has increased or decreased relative to its original value, expressed as a percentage.

Front

How do you calculate percent change?

Back

Percent Change = ((New Value - Original Value) / Original Value) * 100.

Front

What is percent error?

Back

Percent error is a measure of how inaccurate a measurement is, compared to the true value, expressed as a percentage.

Front

How do you calculate percent error?

Back

Percent Error = (|Estimated Value - Actual Value| / Actual Value) * 100.

Front

If a class size increases from 35 to 42, what is the percent change?

Back

Percent Change = ((42 - 35) / 35) * 100 = 20%.

Front

If you guessed 95 wins for a team and they actually won 103, what is your percent error?

Back

Percent Error = (|95 - 103| / 103) * 100 = 7.8%.

Front

What is the actual acceleration due to Earth's gravity?

Back

The actual acceleration due to Earth's gravity is approximately 9.80 meters per second squared.

Front

If Heather measures 10.91 m/s² instead of 9.80 m/s², what is her percent error?

Back

Percent Error = (|10.91 - 9.80| / 9.80) * 100 = 11.33%.

Front

What was the percent change in attendance from 2,376 to 2,950?

Back

Percent Change = ((2,950 - 2,376) / 2,376) * 100 = 24% increase.

Front

If you guessed Lebron James would score 35 points but he scored 28, what is your percent error?

Back

Percent Error = (|35 - 28| / 35) * 100 = 20%.