APPLICATION OF SUPERVISED LEARNING
MACHINE LEARNINGHARD QUESTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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hich one is the correct syntax to find the unique values in the Year column from the car dataset?
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car[’year’].unique==True
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car [’year’]=unique()
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car [’year’].unique()
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car [’year’]=car.year.unique()
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Explanation:
Detailed explanation-1: -To get unique values from a column in a DataFrame, use the unique(). To count the unique values from a column in a DataFrame, use the nunique().
Detailed explanation-2: -unique() function finds the unique elements of an array and returns these unique elements as a sorted array. Apart from the unique elements, there are some optional outputs also, which are as follows: The output can be the indices of the input array which give the unique values.
Detailed explanation-3: -1) Using unique() method. 2) Using the drop duplicates method. 3) Get unique values in multiple columns. 4) Count unique values in a single column. 5) Count unique values in each columns. 07-Feb-2022
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