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Measurement Accuracy Precision and Errors
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Question
How is accuracy defined in measurements?
Answer
Closeness to the true or accepted value.
Question
What indicates high precision in a set of measurements?
Answer
Consistency among measurements, regardless of their accuracy.
Question
Which signification pattern represents precision?
Answer
Large to small, positive exponent in scientific notation.
Question
What is the significance of zeros between nonzero digits?
Answer
They are significant.
Question
Are leading zeros in decimal numbers significant?
Answer
No, they are not significant.
Question
What are systematic errors caused by?
Answer
Flaws in the measurement system or method.
Question
What does the error percentage formula measure?
Answer
The difference between experimental and true values, expressed as a percentage.
Question
What are the three types of errors in measurements?
Answer
Gross errors, random errors, and systematic errors.
Question
Which errors are due to human oversight?
Answer
Gross errors.
Question
What characterizes random errors?
Answer
Unpredictable fluctuations during measurements.
Question
What are examples of environmental systematic errors?
Answer
External conditions affecting measurements.
Question
How are trailing zeros after the decimal point handled in significant figures?
Answer
They are significant.
Question
In scientific notation, what type of numbers are expressed using it?
Answer
Very large or very small numbers.