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Percentage Error in Pharmacy

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Questions and Answers

What is the correct formula for calculating percentage error?

Quantity desired multiplied by maximum potential error divided by 100

Maximum potential error multiplied by 100 divided by quantity desired (correct)

Quantity desired divided by maximum potential error multiplied by 100

Maximum potential error divided by quantity desired multiplied by 100

Why is it necessary for pharmacists to calculate the percentage error?

To determine the price of a medication

To verify the expiration date of a drug

To compare with other competitors

To ensure the error is within allowable limits (correct)

In order for the formula for percentage error to be valid, what must be true about the error and the quantity desired?

They must be expressed in the same denomination (correct)

They must be expressed in different denominations

They must be derived from the same measurement device

They must both be rounded to the nearest whole number

What is a significant factor that pharmacists must consider when using measuring instruments?

<p>The limitations of the measuring instruments</p> Signup and view all the answers

Study Notes

Percentage Error in Pharmacy

Accurate measurements are crucial in pharmacy.
Pharmacists need to understand instrument limitations.
Torsion prescription balances require percentage error calculation.
Percentage error = (Maximum potential error * 100) / Desired quantity.
Error and desired quantity must use the same units.
For a ±4 mg error in a 100 mg measurement, the percentage error is calculated as follows : (4 mg * 100) / 100 mg = 4%

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Description

This quiz focuses on the concept of percentage error, which is essential for accurate measurements in pharmacy. Understand how to calculate percentage error using examples such as torsion prescription balances and pharmacological measurements. Master the relationship between error, desired quantity, and unit consistency.