Data Analytics using Python - Quiz 4

Which of the following is not a reason for missing data:

• People do not share data
• Data Corruption
• ASCII
• Synchronization issues

Which among the following is used to identify missing data?

• df.isnull()
• df.sum()
• df.notnull()
• df.replace()

With which methods can we fill missing values?

• Mean,Median
• bfill,ffill
• interpolate
• Mode

Which of the following is not a method to fix missing values?

• Add Random Values

• replace them with a value

• Drop the row

• Drop the column

The .hist() is used to read the history metadata of a dataset:

• True
• False

The dropna function has a parameter to drop null values in a column subset:

• True
• False

The function used to find the correlation between dataframe columns is:

• df.head
• df.corr()
• df.correlation()
• df.plot

What is the output given by df.corr() [‘mpg’]?

• The correlation between all columns
• The correlation between selected column and all other columns
• The covariance between all columns
• The Standard relation between mpg and corr()

Which of the following is not a parameter of a scatterplot:

• x
• color
• y
• hp

Seaborn is used for

• Aggregation
• Data visualization
• Data Cleaning
• to get dataset of the sea