APPLICATION OF SUPERVISED LEARNING
MACHINE LEARNINGHARD QUESTIONS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
nunique()
|
|
|
. unique()
|
|
|
.nunique()
|
|
|
both 1 and 3
|
Detailed explanation-1: -To count the number of unique values in a specific column in a Pandas dataframe you can use the nunique() method. As with the unique() method, this is simply appended to the end of the column name, e.g. df[’column name’]. nunique() and returns an integer representing the number of unique values.
Detailed explanation-2: -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-3: -Select the range of cells, or make sure the active cell is in a table. On the Data tab, in the Sort & Filter group, click Advanced. Click Copy to another location. In the Copy to box, enter a cell reference. Select the Unique records only check box, and click OK. More items