Accuracy and Precision Assignment

What is the degree of precision of this ruler? cm

0.1 cm

How many significant figures are in each measurement? 73,102 L 0.230 mg 603.00 dm 0.002750 m

5 3 5 4

Complete each calculation and report the answer using the correct number of significant figures. 5.170 kg + 4.20 kg =kg 11.8713 L - 6.2 L = L (3.14 mm)(1.173 mm) = mm2

9.37 kg 5.7 L 3.68 mm2

How can a systematic error affect the reported data?

A systematic error may result in a high degree of precision because the error persists through several measurements. However, systematic errors also result in poor accuracy because the error often produces values that may not be close to the accepted value.

Which of these errors are random? Check all that apply.

The door to a dark room is opened while an X-ray is being developed. The use of a cell phone interferes with the radio frequency of an electronic device.

Which statements represent the rules of significant figures? Check all that apply.

The integers 1, 2, 3, 4, 5, 6, 7, 8, and 9 are always significant. Zeros to the left of a decimal point and in a number greater than or equal to 10 are always significant. Zeros in between numbers are always significant.

Julian is a baseball pitcher. If the red box indicates the strike zone and the blue dots represent pitches, how would you describe Julian's pitching in terms of accuracy and precision?

both accurate and precise

Clara is performing an experiment to determine the acceleration due to gravity of a free-falling object. Data collected from each trial are presented in the table. If the accepted value of acceleration due to gravity is 9.8 m/s2, how would you describe Clara's data?

neither accurate nor precise

Jamaal is golfing. If the flagged hole indicates the accepted value, how would you describe Jamaal's aim in terms of accuracy and precision?

precise but not accurate