Accuracy vs Precision
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Transcript of Accuracy vs Precision
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Accuracy vs Precision
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When you hear the word “accurate” what do you think
of?
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Accurate and Precise do NOT mean the same thing.
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Accuracy means ………
How close a measurement is to some accepted or true value.
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Precise means ………
Used to describe how close repeated measurements are to each other
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A A
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Activity
Could I please have 1 boy volunteer and 1 girl volunteer?
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Based on the definition given for accurate and precise. Determine if your classmates
are more accurate or precise or both!
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Low Accuracy
High Precision
High Accuracy
High Precision
High Accuracy
Low Precision
Low Accuracy
Low Precision
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Elmer Fudd was target practicing. Which diagram below best illustrates inaccuracy and precision?
D
C
B
A
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Accuracy with Data
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Student “A” and Student “B” used a ruler to measure the sides of the cube below. The volume of the cube is 8cm3? Which student’s data was more accurate?
Volume cm3
Trial 1 7.77 cm3
Trial 2 7.80 cm3
Trial 3 7.92 cm3
Volume cm3
Trial 1 7.99 cm3
Trial 2 8.01 cm3
Trial 3 7.98 cm3
A
B
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Accuracy with Equipment
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Which graduated cylinder will give you the most accurate liquid measurement?
A B