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EDA_DataCleaning

Authored by Puneet Kansal

Computers

University

Used 8+ times

EDA_DataCleaning
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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?

df.head()

df.describe()

df.value_counts()

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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