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WorksheetsIntroduction to Data Analysis Quiz
Total questions: 15
Worksheet time: 8mins
Which library in Python is commonly used for data visualization and is known for its simplicity and versatility?
NumPy
Matplotlib
SciPy
TensorFlow
In Pandas, which function is used to read a CSV file into a DataFrame?
read_excel()
read_csv()
read_table()
read_json()
What is the purpose of the `dropna()` function in Pandas?
To fill missing values
To remove missing values
To sort the DataFrame
To merge two DataFrames
Which of the following is a common technique for handling missing data in a dataset?
Ignoring the missing data
Filling missing data with zeros
Using the mean or median to fill missing data
All of the above
What does the function `describe()` in Pandas provide?
A summary of the DataFrame
A plot of the DataFrame
A list of column names
A list of index values
Which of the following is a measure of central tendency?
Variance
Standard deviation
Mean
Range
In machine learning, what is the term for the data used to train a model?
Test data
Validation data
Training data
Sample data
Which Python library is primarily used for numerical computations and data manipulation?
Pandas
NumPy
Matplotlib
Seaborn
What is the output of the following NumPy operation: `np.array([1, 2, 3]) + np.array([4, 5, 6])`?
[5, 7, 9]
[4, 5, 6]
[1, 2, 3]
[0, 0, 0]
Which of the following is a type of plot that can be created using Matplotlib?
Bar plot
Line plot
Scatter plot
All of the above
In Pandas, how do you select a column named "Age" from a DataFrame `df`?
df.Age
df['Age']
df[Age]
df.select('Age')
Which of the following is a common method for normalizing data?
Min-Max Scaling
Log Transformation
Z-Score Normalization
All of the above
What is the purpose of the `groupby()` function in Pandas?
To group data based on a column
To sort data
To merge data
To filter data
Which of the following is a supervised machine learning algorithm?
K-Means Clustering
Linear Regression
Principal Component Analysis
Apriori Algorithm
In NumPy, what does the function `np.mean()` compute?
The median of an array
The mean of an array
The mode of an array
The sum of an array
