(science) accuracy and precision

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Page 1: (Science) Accuracy and Precision
Page 2: (Science) Accuracy and Precision

is how close the measurements are to the true value.

Page 3: (Science) Accuracy and Precision

is how successive measurements agree with each other

Page 4: (Science) Accuracy and Precision
Page 5: (Science) Accuracy and Precision
Page 6: (Science) Accuracy and Precision

% error=

/error/ =Accepted

valueexperimental

value −

Page 7: (Science) Accuracy and Precision

1. Different students in a class was asked to give their estimated volume of a liquid in a beaker. Student 1 give her estimate as 200 mL and 215 mL,190 mL, 195 mL and 230 mL for students 2,3,4, and 5, respectively . When the teacher poured the liquid into a graduated cylinder, she measured the volume as 208 mL. What is the percentage error of the estimated volumes from the beaker, taking the graduated cylinder measurement as the accepted value?

Page 8: (Science) Accuracy and Precision

True Value = 1.20 g/cm3

Trials Lyla Geneve Joacquin

1 0.98 g/cm3 1.53 g/cm3 1.25 g/cm3

2 1.23 g/cm3 2.00 g/cm3 2.96 g/cm3

3 1.02 g/cm3 1.18 g/cm3 2.65 g/cm3

4 1.12 g/cm3 1.92 g/cm3 1.89 g/cm3

5 0.83 g/cm3 1.65 g/cm3 2.76 g/cm3

Page 9: (Science) Accuracy and Precision

Describe the accuracy and precision of the given data.

Among the students , who committed the least error? Explain your answer

Page 10: (Science) Accuracy and Precision

Thank you for listening!

Have a nice Day!