Question

A student measured the mass of a rock is 20 grams. But the actual mass of the rock is 30 g. What was the student's percent deviation?

Answer 1

The percent deviation of the student's measurement from the actual mass of the rock is 33.33%.

Step-by-step explanation:

The student's percent deviation is calculated by comparing the measured value to the actual value. The formula for percent deviation is:

• |(Measured Value - Actual Value) / Actual Value| × 100%

Using the values from the question:

• |(20 g - 30 g) / 30 g| × 100% = |(-10 g) / 30 g| × 100%
• |-1/3| × 100% = 1/3 × 100% = 33.33%

The student's percent deviation is 33.33% when rounded to two decimal places.