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How missing values and impossible values are represented in R language?

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How missing values and impossible values are represented in R language? (a) NA (b) NAN (c) NA & NAN (d) Not Exist This question was posed to me in an online quiz. This interesting question is from Functions topic in section Control Structures, Functions, Scoping Rules, Loop Functions and Debugging of R Programming Select the correct answer from above options

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The correct option is (c) NA & NAN For explanation I would say: NaN (Not a Number) is used to represent impossible values whereas NA (Not Available) is referred to represent missing values. It is good to find the missing values and then take the necessary steps to handle them.

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