Accuracy/Precision, % Error, Sig Figs

How many sig figs are in 0.0045670?

• 8
• 4
• 5
• 7

The students measured length during a science experiement, they got 12 cm. But the actual measurement was 14.25 cm. What was the percent error?

• 16%

• 18.75%

• 2.25%

• 18%

A set of data are all close to each other, but they are not close to the actual value. This set of data can be described as having...

• good accuracy

• good precision

• both good precision and accuracy

• neither good precision nor good accuracy

What is the length of the blue line?

• .3 cm

• .33 cm

• .03 cm

• 3.219 cm

Students worked in teams to measure the length of an object. The actual length of the object was 7.0 cm.
Select the best choice that represents their data in terms of accuracy and precision

GROUP RESULTS

5.00 cm

5.01 cm

5.02cm

4.99 cm

5.00 cm

4.99 cm

• both accurate and precise

• only accurate

• only precise

• not accurate and not precise

How many significant figures should your answer have for the following multiplication problem 19.10 X 18.0 X 22

• 2

• 4

• 3

• none

Comparing the two numbers written in scientific notation, which number is larger 6.0 X 10 ^-3 or 6.0 X 10 ^-2

• 6.0 X 10 ^-3

• 6.0 X 10 ^-2

• both have the same value

Finish the statement. When it comes to doing problem and using significant figure rules, the answer to the problem__

• cannot be anymore precise than the least precise number in the problem, for addition it is the least numbers to the right of the decimal, and for multiplying it is the least number of significant figures

• should be that all numbers are significant that appear in a calculator

• should never be rounded

• should never have any zeros

How many significant figures in 20.3400

• 4

• 6

• 5

• 2

Accuracy is

• Measurements that are close together

• Measurements that are close to the true value

• How close measurements are to the true value

• How close together measurements are to each other