Precision & Accuracy

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View the video and complete the Guiding Questions that follow.

William Tell

Name: Last, First *

DVC id *

e-mail address *

Precision and accuracy refer to the same thing. *

Is the statement true or false?

True

False

Judging William's practice shots which is true? *

Refer to William's practice shots above and check all that apply.

very accurate but not precise

very accurate and very precise

not accurate but very precise

not accurate and not precise

his son is in big trouble

Required

Curiosity's target area on Mars was much smaller than Viking's. This was due to improved science, engineering, and calculations that resulted in dramatically improving the probability of landing within a very small target area, which was very unlikely in 1976. Therefore, the _____________ improved. *

Fill in the blank.

accuracy

precision

precision and accuracy

"Acceptable" uncertainty depends on the application, task, measured value, equipment, and project's requirements. Complex projects such as Viking and Curiosity have many, many parts with many different measurements, calculations, and different acceptable uncertainties. If the most critical value required an uncertainty of +/- 1 km in the Curiosity project versus +/- 1 m in a new project, what is the change in the required precision?

Select the coreect answer.

The required precision is the same.

The required precision must be improved by a factor of 10.

The required precision must be improved by a factor of 100.

The required precision must be improved by a factor of 1,000.

The required precision must be improved by a factor of 1 million

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