Data Analytics Quiz -3

What is NumPy primarily used for?

• Data visualization

• Machine learning

• Scientific computing

• Web development

Which of the following is the correct way to import NumPy in a Python script?

• `import numpy`

• `import np`

• `from numpy import *`

• `from math import numpy`

Which NumPy data structure is used to represent multi-dimensional arrays?

• Lists

• Tuples

• Arrays

• Sets

What is the result of the following NumPy operation?

`np.arange(1, 6) + np.arange(6, 11)`

• [7, 9, 11, 13, 15]

• [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

• [6, 8, 10, 12, 14]

• [1, 2, 3, 4, 5, 6]

Which NumPy function is used to find the mean (average) of an array?

• `np.mean()`

• `np.average()`

• 'np.median()`

• `np.sum()`

What is Pandas primarily used for in Python?

• Web development

• Scientific computing

• Data manipulation and analysis

• Machine learning

In Pandas, which data structure is used to store and manipulate tabular data with rows and columns?

• Lists

• Arrays

• Series

• DataFrame

How can you read a CSV file named "data.csv" into a Pandas DataFrame?

• `pd.read_file("data.csv")`

• `pd.load_csv("data.csv")`

• `pd.read_csv("data.csv")`

• `pd.open_csv("data.csv")`

What is the default index type for a Pandas DataFrame?

• Integer index starting from 0

• String index

• Date index

• It depends on the data in the DataFrame

Which Pandas function is used to drop rows with missing (NaN) values from a DataFrame?

• `pd.remove_null()`

• `pd.drop_na()`

• `pd.dropna()`

• `pd.fillna()`