2022 Error Theory and Data Processing(Beihang University)1467406448 最新满分章节测试答案

本答案对应课程为:点我自动跳转查看
本课程起止时间为:2022-03-10到2022-06-20
本篇答案更新状态:已完结

Chapter 1： Introduction Chapter 1 Quizlet

1、 问题:The term accuracy of measurement accuracy evaluation is expressed as the ( ).
选项：
A:degree of consistency between measurements
B:measurement mean
C:measured mean square error
D:difference between the measurement result and the true value
答案: 【degree of consistency between measurements】

2、 问题:Which of the following represents the measured value (  ).
选项：
A:
B:
C:
D:
答案: 【】

3、 问题:The 0.05 level voltmeter means that (  ).
选项：
A:the absolute error of the voltmeter is 0.05
B:the relative error of the voltmeter is 5%
C:the quoted error of the voltmeter is 5%
D:the quoted error of the voltmeter is 0.05%
答案: 【the quoted error of the voltmeter is 0.05%】

4、 问题:Using the arithmetic mean as the best estimate of the measured value reduces the influence of (  ).
选项：
A:system error
B:random error
C:relative error
D:gross error
答案: 【random error】

5、 问题:
选项：
A:0.90
B:0.9
C:0.900
D:
答案: 【0.90】

6、 问题:All measured values have errors.
选项：
A:正确
B:错误
答案: 【正确】

7、 问题:To measure a certain quantity in the same measurement process, the values of systematic error and random error always increase or decrease simultaneously.
选项：
A:正确
B:错误
答案: 【错误】

8、 问题:One of the significances of studying errors is to analyze the causes of errors to eliminate or reduce them.
选项：
A:正确
B:错误
答案: 【正确】

9、 问题:The smaller the measurement accuracy, the higher the measurement precision.
选项：
A:正确
B:错误
答案: 【错误】

10、 问题:The more digits reserved in the measurement result, the higher the accuracy.
选项：
A:正确
B:错误
答案: 【错误】

Chapter 3： Basic concept of error analysis Chapter 3 Quizlet

1、 问题:Correct measurement and processing of experimental data can completely eliminate errors.
选项：
A:正确
B:错误
答案: 【错误】

2、 问题:When measuring the length with a thermally expanded steel tape, a periodic systematic error will be introduced.
选项：
A:正确
B:错误
答案: 【错误】

3、 问题:The computational data comparison method can judge whether there is a systematic error.
选项：
A:正确
B:错误
答案: 【正确】

4、 问题:The synthesis of several random errors can be performed by the square sum root method or the algebraic sum method.
选项：
A:正确
B:错误
答案: 【错误】

5、 问题:Gross error is the sum of random error and systematic error.
选项：
A:正确
B:错误
答案: 【错误】

6、 问题:The error which is always the same in the process of measurement is the systematic error.
选项：
A:正确
B:错误
答案: 【错误】

7、 问题:A limit error means that any error difference in all measurement columns will not exceed this limit error in measurement.
选项：
A:正确
B:错误
答案: 【错误】

8、 问题:Random errors can be corrected and then eliminated.
选项：
A:正确
B:错误
答案: 【错误】

9、 问题:The magnitude of the absolute error reflects the accuracy of the measurement.
选项：
A:正确
B:错误
答案: 【错误】

10、 问题: As long as the error is systematic, it can be corrected.
选项：
A:正确
B:错误
答案: 【错误】

Chapter 5： Processing and evaluation of measurement results Chapter 5 Quizlet

1、 问题:The measurement uncertainty represented by ( ) is called standard uncertainty.
选项：
A:standard deviation
B:half-width of the measured value
C:experimental standard deviation
D:mathematical expectation
答案: 【standard deviation】

2、 问题:The uncertainty obtained by synthesizing multiple  standard uncertainties (usually 2-3 times) is called ( ).
选项：
A:total uncertainty
B:extended uncertainty
C:standard uncertainty
D:class B standard uncertainty
答案: 【extended uncertainty】

3、 问题:Under the condition of repeatability, the temperature of a laboratory was repeatedly measured 16 times with a thermometer, and the experimental standard deviation of its distribution was calculated as S =0.44℃, so the standard uncertainty of the measurement result was ( ).
选项：
A:0.44 ℃
B:0.11 ℃
C:0.88
D:0.22 ℃
答案: 【0.11 ℃】

4、 问题:The Bessel formula for the experimental standard deviation of the measured value X is ( ).
选项：
A:
B:
C:
D:
答案: 【】

5、 问题:The standard deviation of a uniform distribution is ( ) times the half-width of its interval.
选项：
A:
B:
C:
D:
答案: 【】

6、 问题:Under different conditions, such as different instruments, or different experimenters, or different times, or different environments, or different methods, the same measurement is repeated many times, and the standard deviation of each measurement is usually different. 
选项：
A:正确
B:错误
答案: 【正确】

7、 问题:Although arithmetic means can represent the result of a group of measurement values, they cannot represent the dispersion degree of measurement values. Standard deviation is commonly used to describe the dispersion of measurement values in measurement practice.
选项：
A:正确
B:错误
答案: 【正确】

8、 问题:Each data measured in an equal-precision measurement has the same degree of confidence and should be treated equally with the same importance. 
选项：
A:正确
B:错误
答案: 【正确】

9、 问题:A measurement with a large standard deviation has little influence on the final measurement result, so its proportion in the final measurement result should be small, and its weight should be small. The reverse is true.
选项：
A:正确
B:错误
答案: 【正确】

10、 问题:Evaluation of uncertainty in measurement with a non-statistical method is called class A uncertainty evaluation. 
选项：