COMPUTER SCIENCE AND ENGINEERING
DATA STRUCTURES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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levels
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class
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order
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None of the above
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Detailed explanation-1: -The incorrect answer is Quantity of inputs.
Detailed explanation-2: -Attributes of a factor It is the input vector which is to be transformed into a factor. It is an input vector that represents a set of unique values which are taken by x. It is a character vector which corresponds to the number of labels. It is a logical attribute which determines if the levels are ordered.
Detailed explanation-3: -4.3 Ordered factors The levels of factors are stored in alphabetical order, or in the order they were specified to factor if they were specified explicitly. Sometimes the levels will have a natural ordering that we want to record and want our statistical analysis to make use of.
Detailed explanation-4: -R – Level Ordering of Factors Factors are data objects used to categorize data and store it as levels. They can store a string as well as an integer. They represent columns as they have a limited number of unique values. Factors in R can be created using factor() function.