1.3 Uncertainty in Data

Significant figures are important because they:

• indicate the precision of a measurement.

• are used to express large numbers.

• help in rounding off numbers.

• are used in scientific notation.

Students will learn about ______ in Lesson 3.

• mathematics

• science

• history

• art

Tags

NGSS.HS-ESS2-1

NGSS.HS-ESS3-1

NGSS.HS-LS1-5

NGSS.HS-LS2-5

NGSS.HS-PS1-1

Significant figures reflect the precision of a measurement by:

• indicating the exactness of the measurement

• showing the range of possible values

• providing a detailed description

• offering a rough estimate

Analyzing data is important because:

• it helps in making informed decisions.

• it is a fun activity.

• it is a mandatory skill for everyone.

• it is a way to pass time.

Tags

NGSS.HS-ESS3-5

NGSS.HS-ETS1-3

The definition of accuracy is:

• The degree to which the result of a measurement conforms to the correct value or a standard.

• The ability to perform a task with speed and efficiency.

• The capacity to understand and share the feelings of another.

• The quality of being fair and impartial.

Tags

NGSS.HS-PS1-7

NGSS.HS-PS2-1

Precision is defined as:

• The degree to which repeated measurements under unchanged conditions show the same results.

• The closeness of a measured value to a standard or known value.

• The ability to measure small differences in a quantity.

• The range within which a measurement is considered accurate.

The definition of error is:

• A deviation from accuracy or correctness

• A type of success

• A form of communication

• A method of calculation

The definition of percent error is:

• The difference between the experimental value and the accepted value, divided by the accepted value, multiplied by 100%.

• The difference between the accepted value and the theoretical value, divided by the theoretical value, multiplied by 100%.

• The difference between the experimental value and the theoretical value, divided by the experimental value, multiplied by 100%.

• The difference between the accepted value and the experimental value, divided by the experimental value, multiplied by 100%.

The definition of significant figures is:

• The number of digits in a number that contribute to its accuracy

• The total number of digits in a number

• The number of decimal places in a number

• The number of zeros in a number

Tags

NGSS.HS-PS1-7

Accuracy and precision in data can be contrasted by:

• Accuracy refers to how close measurements are to the true value, while precision refers to how close measurements are to each other.

• Accuracy and precision both refer to how close measurements are to the true value.

• Precision refers to how close measurements are to the true value, while accuracy refers to how close measurements are to each other.

• Accuracy and precision are unrelated concepts in data measurement.