IED Measurement and Math Modeling

If a ruler has 16 ticks between inches, what is the correct amount of significant digits to measure to?

• the closest 1/16th of an inch

• the closest 1/20th of an inch

• the closest 1/40th of an inch

• the closest 1/32nd of an inch

Significant Digits are...

• Facts and statics used for reference or analysis

• The set of output values of a function.

• The digits in a decimal number that carry meaning contributing to the precision or accuracy of the quantity.

• The digits used to understand the distribution of data

True or False: When we take measurements with non digital instruments (such as rulers), we record the digits we can certainly determine and estimate one additional digit

• True

• False

True or False: When we take measurements with digital instruments (such as scales), we record the digits we can certainly determine and estimate one additional digit

• True

• False

If you wanted to measure using this ruler to the correct amount of significant digits, what fractional inches would you record to?

• the nearest 1/8th inch

• the nearest 1/16th inch

• the nearest 1/32nd inch

• the nearest 1/20th inch

What is the measurement (In inches) to the correct number of significant digits?

• 8 inches

• 8 1/16 inches

• 8 1/32 inches

• 8 2/32 inches

What is the measurement (In cm) to the correct number of significant digits?

• 3.15

• 3.1

• 3 3/32

• 3 1/16

What is the measurement (In inches), to the correct number of significant digits?

• 2.2

• 2.20

• 2 2/8

• 2 4/16

What is the measurement (in inches) to the correct number of significant digits?

• 2 2/16

• 2 2/32

• 2 5/32

• 2 2.5/16

What is the measurement (in cm) to the correct number of significant digits?

• 3 2/16

• 3.25

• 3.2

• 3 5/32