To find Teresa's percent error, we can use the following formula for percent error:
Step 1: Identify the values
- Estimated Value = 18 feet
- Actual Value = 16 feet
Step 2: Calculate the absolute error
Step 3: Calculate the percent error
Now, substitute the values into the percent error formula:
Step 4: Perform the division
Step 5: Multiply by 100 to convert to percentage
Final Answer
Teresa’s percent error is 12.5%.
This rounds to the nearest tenth as 12.5%.