Aatikah plans to buy books at a book fair. She thinks she will need $30.00 to purchase the books. She only spends $19.75. Find the percent error in her prediction. Round your answer to the nearest whole number
The percent error can be calculated using the formula:
Percent Error = (Actual Value - Predicted Value) / Predicted Value * 100
In this case, the actual value is $19.75 and the predicted value is $30.00.
Percent Error = (19.75 - 30.00) / 30.00 * 100
Percent Error = (-10.25 / 30.00) * 100
Percent Error = -0.342 * 100
Percent Error = -34.2%
Rounding to the nearest whole number, the percent error is -34%.
To find the percent error in Aatikah's prediction, we can use the formula:
Percent Error = (|Predicted Value - Actual Value| / Actual Value) × 100
In this case, the predicted value is $30.00 and the actual value is $19.75.
Plugging in the values, we get:
Percent Error = (|30.00 - 19.75| / 19.75) × 100 = (10.25 / 19.75) × 100
Dividing 10.25 by 19.75 gives us approximately 0.519, and multiplying by 100 gives us 51.9.
Rounding 51.9 to the nearest whole number, the percent error is 52%.
To find the percent error in Aatikah's prediction, we need to calculate the difference between her predicted amount and the actual amount she spent, and then express that difference as a percentage of her predicted amount.
First, calculate the difference between Aatikah's predicted amount and the actual amount she spent:
Error = Predicted amount - Actual amount
Error = $30.00 - $19.75
Error = $10.25
Next, calculate the percent error by dividing the absolute value of the error by the predicted amount and multiplying by 100:
Percent Error = (|Error| / Predicted amount) * 100
Percent Error = (|$10.25| / $30.00) * 100
To round our answer to the nearest whole number, we can use the round function. Assuming you are using a programming language, you can write the following code:
rounded_percent_error = round((abs(10.25) / 30.00) * 100)
After evaluating this code, the rounded_percent_error will be the percent error rounded to the nearest whole number.