Measurement, Accuracy and Precision

Comparison between an unknown physical quantity and a standard is called ................

• measurement

• calibration

• precision

Mass of a football is 450 g. Which of the following is a standard unit used to compare mass?

• meter

• gram

• second

How well measurements agree with the "real value" is called ............

• accuracy

• precision

• calcuation

Which of the following weighing balance is more accurate?

• A

• B

• C

Which of the following weighing balance is more precise?

• A

• B

• C

The degree of exactness of measurement is called ...........

• acuuracy

• precision

• calculation

Which of the following measurement is more precise?

• 0.54

• 0.540

• 0.5400

Which of the following diagram represents more accurate and more precise ?

• A

• B

• C

• D

The apparent shift in position of the object when viewed from different angles is called .................

• parallax error

• instrument error

• systematic error

A box has length of 18.1 cm, a width of 19.2 cm and is 20.3 cm height. How precise is the measurement of length?

• 1/10 of cm

• 1/100 of cm

• 1/1000 of cm