Pat practices on the keyboard to improve his typing speed. When he typed the sentence It was a rainy day, he missed typing the letter r in the word rainy. Assuming he typed this sentence in a minute, what is Pat’s typing accuracy and error rate?

94.4% Typing accuracy

1 error per minute

Explanation:

The sentence "It was a rainy day" contains five words and 18 characters (including spaces). Therefore, since Pat typed this sentence in a minute then his typing accuracy is

(17 / 18) * 100 = 94.4% Typing accuracy

That is because he typed 17 out of the 18 characters correctly in the sentence. Pat's error rate on the other hand is

1 / 1 = 1 error per minute

This is because in the span of one minute that it took to type the entire sentence Pat only made one error.

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