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21 votes
100 students were estimated at a

basketball game. 120 students
were actually there. What is the
percent error?

1 Answer

10 votes

Answer:

20%

Explanation:

Use the formula:

The "|" symbol represents absolute value and the dashed line represents a division line.

| Theoretical Value - Actual Value |

Percent Error = -------------------------------------------------- × 100

| Theoretical value |

  • 100 students is the theoretical value
  • 120 students is the actual value

100 - 120 = -20

-20 / 100 = -0.2

|-0.2| = 0.2

0.2 × 100 = 20

The answer is 20%

User Karleen
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