Errors in Numerical Methods Flashcards
What is the name given to the set of ALL observations made on ALL objects under study for a given characteristic or variable?
A. Sample
B. Population
C. Survey
D. Parameter
B
What is the name given to a set of observations that constitute PART of the population.
A. Statistic
B. Census
C. Population
D. Sample
D
What do we call a numerical characteristic of the POPULATION?
A. Statistic
B. Parameter
C. Observation
D. Study
B
What do we call a quantity calculated from the observations in a SAMPLE?
A. Parameter
B. Study
C. Statistic
D. Observation
C
What do we call the sampling method that consists of n individuals from the population chosen in such a way that every individual has an equal chance of being selected?
A. Stratified Sampling
B. Simple Random Sampling (SRS)
C. Cluster Sampling
D. Systematic Sampling
B
The students measured length during a science experiment, they got 12cm. But the actual measurement was 14.25cm. What was the absolute error?
A. 2.25
B. 2.52
C. 2.53
D. 2.43
A
The attendance for the basketball game was estimated to be 15,000 people but 12,500 people attended. What was the absolute error?
A. 2600
B. 2500
C. 2505
D. 2550
B
The deer population is estimated to be 17,600 in northern Illinois, but an actual count was 21,300. What is the percent error?
A. -21.0%
B. -17.37%
C. 17.4%
D. 21.02%
C
During the school fire drill the actual count of students was between 1380 and 1402. What is the most the absolute error could be?
A. 22
B. -22
C. 2782
D. 22%
A
During the school fire drill the actual count of students was between 1380 and 1402. What is the most the percent error could be? Round your answer to the nearest tenth of a percent.
A. 1.6%
B. 1.56%
C. 1.59%
D. 52.52%
A
Zed went to the store and bought a bag of chips. He estimated there would be 350 chips in the package, but realized there were only 210 chips in that package. What was his relative error?
A. 0.35
B. 0.67
C. 0.85
D. 0.92
B
Jessie estimates the weight of her cat to be 8 pounds. The actual weight of the cat was 10 pounds. Find the relative error.
A. 0.15
B. 0.2
C. 0.25
D. 0.3
B
Bob estimates that there will be 230 people who attend the concert. There was an actual total of 300 people who attended. Find the relative error.
(300-230)/300=0.23
Find the percent error. You estimate that you sent 135 texts last week but when you get the bill it was actually 108.
A. (135 - 108)/135 = 20%
B. (135 - 108)/108 = 25%
C. (108 - 135)/135 = -20%
D. (108 - 135)/108 = -25%
B
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.
A. 7.8%
B. 8.7%
C. 0.77%
D. 0.87%
A
