AVS & Lesson Quiz 3-4

A ______________________ describes the accuracy of an estimated value as compared to an actual value.

• percent error

• standard deviation

• mean absolute error

• variance

The ______________________ describes how much a quantity has changed when compared to its original amount. (Options: percent change, percent error)

• percent change

• percent error

• percent increase

• percent decrease

Read each scenario. Then choose whether you would find the percent increase, percent decrease, or percent error. Yesterday, I ran 5 miles. Today, I ran 3.7 miles.

• percent increase

• percent decrease

• percent error

Read each scenario. Then choose whether you would find the percent increase, percent decrease, or percent error. The marching band had 304 students last year. This year, 322 students participate in band.

• percent increase

• percent decrease

• percent error

Read each scenario. Then choose whether you would find the percent increase, percent decrease, or percent error. Tomas estimated there were 125 people in the audience. There were actually 137 people.

• percent increase

• percent decrease

• percent error

A town’s population was 36,067 in 2005. Ten years later, the population is 37,902.

• percent increase

• percent decrease

• percent error

Read each scenario. Then choose whether you would find the percent increase, percent decrease, or percent error. A faulty scale displayed the weight of the package as 14 pounds 13 ounces. The exact weight was 13 pounds 6 ounces.

• percent increase

• percent decrease

• percent error

A town’s population of children increased from 376 to 421 during the past year. Which equation shows how to find the percent increase?

• p = (421 - 376) / 376

• p = (421 - 376) / 421

• p = 376 / (421 - 376)

• p = (376 + 421) / 376

• 50%

• 66.67%

• 25%

• 40%

A zookeeper predicted that the weight of a newborn lion would be 2.8 pounds. When the zoo’s lion gave birth, the newborn weighed 3.5 pounds. What is the zookeeper’s percent error? Round to the nearest percent.

• 20%

• 25%

• 30%

• 35%