Percent Error

You estimate that you sent 135 texts last week but when you get the bill it was actually 108. 

• 20%

• 25%

• 30%

• 18%

You estimate that 200 people attend a school concert. The actual attendance was 240.   What is the percent error?

• 20%

• 18%

• 16%

• 17%

You guessed that the Chicago Cubs would win 95 games during the regular season. They actually won 103. What was your percent error? Round to the nearest tenth if necessary.

• 7.8%

• 7.7%

• 0.77%

• 0.78%

A ratio that compares a number to 100

• percent change

• product

• rate

• percent

The student council estimated that they would have 250 people attend the homecoming dance. The number of people who attended was 315. What is the percent of error to the nearest hundredth percent? Type the answer in the blank up to the hundredth place value.

Mathematical Equivalence

ON

A percent error is how _________ a measurement is compared to the correct measurement

• inaccurate/wrong

• accurate/right

• percent

• increase

You guessed that there are 350 gumballs in a jar, but there are actually 500. What is your percent error? HINT: Percent Error=Amount of Error/Actual Amount

• .43

• 43%

• .3

• 30%

Jocelyn estimates that a piece of wood measures 5.5 cm. If it actually measures 5.62 cm, what is the percent error of Jocelyn's estimate?

• 2.13%

• 2.18%

• 12%

• 46.83%

What is the percent error in the following scenario? Actual Value: 10 Measured Value: 12

• 1% error

• 2% error

• 10% error

• 12% error