SECTION 3C HIGHLIGHTS
Vocabulary: accuracy, precision, absolute error, relative error, random error, systematic error
Assignment: Read section 3C pages 165-177 Do exercises 2abh,17,18,19,25,26
Notes:
1. Accuracy is how close you are to the true measurement
2. Precision is measured by how many decimal places the measurement instrument
can measure an object.
3. Absolute error is the difference between the true value and the measurement
you took.
4. Relative error is the percent error between the true value and the
measurement you took.
5. A random error cannot be helped.
6. A systematic error is an error in the way the system is designed. These
errors can be avoided.
Skills to be mastered in this section:
1. Round a number to a specific place value.
2. Find absolute and relative errors.
3. Discover which measurement is more precise and which is more accurate.
US 2000Census information:
Use the web site below to begin your search to find the following facts
a. Total US population http://factfinder.census.gov/servlet/BasicFactsServlet
b. Total Population of New York State NYSpopulation
c. Average yearly income in the US income
d. Look at a table of the ratio of men to women. Are there more women than men in the US? men/women
e.
State another fact that you found interesting.http://factfinder.census.gov/servlet/BasicFactsServlet