Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device...

16
ACCURACY VS. PRECISION

Transcript of Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device...

Page 1: Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device must be checked Does it read a proper accepted.

ACCURACY VS.

PRECISION

Page 2: Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device must be checked Does it read a proper accepted.

ACCURACY Accuracy = the extent to which a

measured value agrees with a standard valueAccuracy of a device must be checkedDoes it read a proper accepted value?

Beware of Parallax – the apparent shift in position when viewed at a different angle.

Page 3: Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device must be checked Does it read a proper accepted.

EXAMPLE: ACCURACY

Who is more accurate when measuring a book that has a true length of 17.0 cm?

Susan: 17.0 cm, 16.0 cm, 18.0 cm, 15.0 cm

Amy: 15.5 cm, 15.0 cm, 15.2 cm, 15.3 cm

Page 4: Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device must be checked Does it read a proper accepted.

PRECISION Precision = the degree of exactness of a

measurement that is repeatedly recorded.

Which set is more precise?18.2 , 18.4 , 18.3517.9 , 18.3 , 18.8516.8 , 17.2 , 19.44

Page 5: Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device must be checked Does it read a proper accepted.

EXAMPLE: PRECISION

Who is more precise when measuring the same 17.0 cm book?

Susan: 17.0 cm, 16.0 cm, 18.0 cm, 15.0 cm

Amy: 15.5 cm, 15.0 cm, 15.2 cm, 15.3 cm

Page 6: Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device must be checked Does it read a proper accepted.

Accuracy vs Precision

Precise, not accurate

Accurate, not precise

Precise and accurate

Groupings

Page 7: Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device must be checked Does it read a proper accepted.

Accuracy vs. Precision

More Precise

More Accurate

Less Accurate

x

Less Precise

Page 8: Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device must be checked Does it read a proper accepted.

ACCURACY VS PRECISION

Page 9: Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device must be checked Does it read a proper accepted.

ACCURACY VS. PRECISION

High AccuracyHigh Precision High Precision

Low Accuracy

Page 10: Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device must be checked Does it read a proper accepted.

Three targets with three arrows each to shoot.

Can you hit the bull's-eye?

Both accurate and precise

Precise but not accurate

Neither accurate nor precise

How do they compare?

Can you define accuracy vs. precision?

Page 11: Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device must be checked Does it read a proper accepted.
Page 12: Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device must be checked Does it read a proper accepted.

GRADUATED CYLINDER – MENISCUS AND PARALLAX

Page 13: Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device must be checked Does it read a proper accepted.

WHY IS THERE UNCERTAINTY?

• Measurements are performed with instruments, and no instrument can read to an infinite number of decimal places•Which of the instruments below has the greatest uncertainty in measurement?

Page 14: Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device must be checked Does it read a proper accepted.

EVALUATE WHETHER THE FOLLOWING ARE PRECISE, ACCURATE OR BOTH.

Low Accuracy

Low Precision

Low Accuracy

High Precision

High Accuracy

High Precision

Page 15: Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device must be checked Does it read a proper accepted.

ACCURACY VS PRECISION

http://ls.xenia.k12.oh.us/SafeVideos/Video.aspx?id=_LL0uiOgh1E

http://ls.xenia.k12.oh.us/SafeVideos/Video.aspx?id=_LL0uiOgh1E
http://ls.xenia.k12.oh.us/SafeVideos/Video.aspx?id=_LL0uiOgh1E
http://ls.xenia.k12.oh.us/SafeVideos/Video.aspx?id=_LL0uiOgh1E
http://ls.xenia.k12.oh.us/SafeVideos/Video.aspx?id=_LL0uiOgh1E
Page 16: Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device must be checked Does it read a proper accepted.

ACCURACY VS. PRECISION GAME


Medecins Agrees ListesGrandEst

Medecins Agrees ListesGrandEst

UNDERSTANDING VALUE BASED PURCHASING (VBP) · 2017-10-25 · CMS agrees with complaints about MACRA A top CMS official agrees with an influential congressional advisory group that

UNDERSTANDING VALUE BASED PURCHASING (VBP) · 2017-10-25 · CMS agrees with complaints about MACRA A top CMS official agrees with an influential congressional advisory group that

I II III I. Using Measurements MEASUREMENT. A. Accuracy vs. Precision Accuracy - how close a measurement is to the accepted value Precision - how.

I II III I. Using Measurements MEASUREMENT. A. Accuracy vs. Precision Accuracy - how close a measurement is to the accepted value Precision - how.

Manuels Agrees 2014

Manuels Agrees 2014

The Value of Inventory Accuracy in Supply Chain Management ...

The Value of Inventory Accuracy in Supply Chain Management ...

Information of Value—You Send….We Trend WBARS Accuracy…Nuances….Fun Facts

Information of Value—You Send….We Trend WBARS Accuracy…Nuances….Fun Facts

DT-200 SERIES · All The Theodolite You’ll Ever Need Durability, accuracy, and value Topcon’s DT-200 Series represents the highest accuracy and value in digital theodolite technology.

DT-200 SERIES · All The Theodolite You’ll Ever Need Durability, accuracy, and value Topcon’s DT-200 Series represents the highest accuracy and value in digital theodolite technology.

Chapter 3 3 The Vocabulary ... Anal. Chem. 1983, 55, ... Accuracy is how closely the result of an experiment agrees with the “true”

Chapter 3 3 The Vocabulary ... Anal. Chem. 1983, 55, ... Accuracy is how closely the result of an experiment agrees with the “true”

Accuracy, Precision & Significant Analysis Figures ......2017/10/29  · Accuracy • Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device

Accuracy, Precision & Significant Analysis Figures ......2017/10/29  · Accuracy • Accuracy = the extent to which a measured value agrees with a standard value Accuracy of a device

Examination of Grey Value Accuracy and Improvement of ...

Examination of Grey Value Accuracy and Improvement of ...

Standards of Measurements. Accuracy and Precision Accuracy – how close a measured value is to the actual value Precision – how close the measured values.

Standards of Measurements. Accuracy and Precision Accuracy – how close a measured value is to the actual value Precision – how close the measured values.

GeoTracker Survey_XYZ€¦  · Web viewELEV_ACC_VAL N15 No Yes Elevation Accuracy Value The accuracy range (+/-) of the absolute elevation measurement reported in centimeters at

GeoTracker Survey_XYZ€¦  · Web viewELEV_ACC_VAL N15 No Yes Elevation Accuracy Value The accuracy range (+/-) of the absolute elevation measurement reported in centimeters at

Accuracy and Precision Accuracy is the closeness of measurements to the correct or accepted value of the quantity measured. Precision is the closeness.

Accuracy and Precision Accuracy is the closeness of measurements to the correct or accepted value of the quantity measured. Precision is the closeness.

Trust. Value. Accuracy. - GE Diabetes · Trust. Value. Accuracy. TINY BLOOD SAMPLE Small sampling with quick & accurate results. EASY TO HANDLE Easy to hold, use & test. CLEAN AND

Trust. Value. Accuracy. - GE Diabetes · Trust. Value. Accuracy. TINY BLOOD SAMPLE Small sampling with quick & accurate results. EASY TO HANDLE Easy to hold, use & test. CLEAN AND

The Value of Accuracy in the Patent Systemlawreview.uchicago.edu/sites/lawreview.uchicago.edu/files... · 2017-09-05 · 1217 The Value of Accuracy in the Patent System Stephen Yelderman†

The Value of Accuracy in the Patent Systemlawreview.uchicago.edu/sites/lawreview.uchicago.edu/files... · 2017-09-05 · 1217 The Value of Accuracy in the Patent System Stephen Yelderman†

FGDC ACCURACY STANDARDS - c.ymcdn.com · ... monumentation, and description of the ... true value and the measured value. By correcting each measurement for ... value to a standard

FGDC ACCURACY STANDARDS - c.ymcdn.com · ... monumentation, and description of the ... true value and the measured value. By correcting each measurement for ... value to a standard

1.2.6-11Uncertainty and error. 1.2.7 Distinguish between precision and accuracy Accuracy is how close to the “correct” value Precision is being able to.

1.2.6-11Uncertainty and error. 1.2.7 Distinguish between precision and accuracy Accuracy is how close to the “correct” value Precision is being able to.

Accuracy, Timeliness, and Managerial Discretion of Fair ... Files/Andrew_Jing_Liu_Job...1 Accuracy, Timeliness, and Managerial Discretion of Fair Value Pricing: Evidence from the US

Accuracy, Timeliness, and Managerial Discretion of Fair ... Files/Andrew_Jing_Liu_Job...1 Accuracy, Timeliness, and Managerial Discretion of Fair Value Pricing: Evidence from the US

ACCURACY AND PRECISION ACCURACY: refers to how close a measured value is to an accepted value PRECISION: refers to how close a series of measurements.

ACCURACY AND PRECISION ACCURACY: refers to how close a measured value is to an accepted value PRECISION: refers to how close a series of measurements.

I. Using Measurements MEASUREMENT IN SCIENCE. A. Accuracy vs. Precision Accuracy - how close a measurement is to the accepted value Precision - how close.

I. Using Measurements MEASUREMENT IN SCIENCE. A. Accuracy vs. Precision Accuracy - how close a measurement is to the accepted value Precision - how close.