Calculate reading accuracy rate for a running record: enter words read and errors to get accuracy, error rate and self-correction ratio, plus WCPM.
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Reading Accuracy Rate Formula
The following two example problems outline the steps and information needed to calculate the Reading Accuracy Rate.
- Where RAR is the Reading Accuracy Rate (%)
- WR is the total number of words read
- E is the total number of errors
To calculate reading accuracy, subtract scored errors from total words attempted, divide by total attempted words, then multiply by 100. Use one assessment’s rules for errors and self-corrections. WCPM is correct words divided by reading time in minutes. Inverse word counts may be fractional algebraic estimates; use observed whole-word counts for an actual assessment. Accuracy alone does not establish comprehension or a universal reading level.
How to Calculate Reading Accuracy Rate?
The following example problems outline how to calculate Reading Accuracy Rate.
Example Problem #1:
- First, determine the total number of words read.
- The total number of words read is given as 5,000.
- Next, determine the total number of errors.
- The total number of errors is provided as 1,000.
- Finally, calculate the Reading Accuracy Rate using the equation above:
RAR = (WR-E) / WR * 100
The values provided above are inserted into the equation below and computed.
RAR = (5000-1000) / 5000 * 100 = 80.00 (%)
Example Problem #2:
For this problem, the variables required are provided below:
total number of words read = 600
total number of errors = 100
Test your knowledge using the equation and check your answer with the calculator.
RAR = (WR-E) / WR * 100 = ?
