
EDA_DataCleaning
Authored by Puneet Kansal
Computers
University
Used 9+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following methods gives a quick statistical summary of Statistical columns in a DataFrame?
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which method removes all rows that contain at least one NaN value?
df.remove_na()
df.dropna()
df.clean()
df.fillna(0)
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following fills all missing values in a column with 0?
df.fillna(0)
df.dropna(0)
df.replace(0)
df.nullfill(0)
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What will df.isnull().sum() return?
Boolean DataFrame
Number of nulls per row
Number of nulls per column
Total null count in the DataFrame
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How to fill missing values in column 'age' with the column’s median?
df['age'].fillna('median')
df['age'].fillna(df['age'].mean())
df['age'].fillna(df['age'].median())
df.fill_missing(df['age'])
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which command gives total number of missing values in entire DataFrame?
df.countna()
df.isnull().sum()
df.isnull().sum().sum()
df.check().na()
7.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Which method forward fills missing values?
df.fillna(method='backward')
df.fillna(method='forward')
df.fillna(method='ffill')
df.ffill
()
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