Data analysis with python

1. Which of the following plots are often used for checking randomness in time series?

Autocausation
Autorank
Autocorrelation
None of the mentioned

Detailed SolutionWhich of the following plots are often used for checking randomness in time series?

2. What is the primary purpose of the “groupby” method in Pandas when working with categorical data?

Sorting data
Filtering data
Reshaping data
Grouping and aggregating data

Detailed SolutionWhat is the primary purpose of the “groupby” method in Pandas when working with categorical data?

3. In Python, which library provides tools for working with complex data structures and data manipulation, often used for data analysis in the financial sector?

Seaborn
Dask
Matplotlib
Seaborn

Detailed SolutionIn Python, which library provides tools for working with complex data structures and data manipulation, often used for data analysis in the financial sector?

4. What is the primary purpose of the “pivot_table” function in Pandas when aggregating data?

Aggregate and summarize data
Reshape data
Sort data
Group data

Detailed SolutionWhat is the primary purpose of the “pivot_table” function in Pandas when aggregating data?

5. Which Python library is commonly used for creating interactive data dashboards and web applications for data visualization?

Pandas
Seaborn
Dash
Bokeh

Detailed SolutionWhich Python library is commonly used for creating interactive data dashboards and web applications for data visualization?

6. What is the primary purpose of the “explode” function in Pandas when working with nested data in a DataFrame?

Filtering data
Sorting data
Explode list-like columns
Grouping and aggregating data

Detailed SolutionWhat is the primary purpose of the “explode” function in Pandas when working with nested data in a DataFrame?

7. cov and corr supports the optional min_periods keyword.

TRUE
nan
nan
nan

Detailed Solutioncov and corr supports the optional min_periods keyword.

8. Which of the following is used for testing for membership in the list of column names?

in
out
elseif
none of the mentioned

Detailed SolutionWhich of the following is used for testing for membership in the list of column names?

9. Which of the following is a foundational exploratory visualization package for the R language in pandas ecosystem?

yhat
Seaborn
Vincent
None of the mentioned

Detailed SolutionWhich of the following is a foundational exploratory visualization package for the R language in pandas ecosystem?

10. Which Python library is often used for working with large-scale, multidimensional arrays and data manipulation in scientific computing?

Dask
Seaborn
xarray
Pandas

Detailed SolutionWhich Python library is often used for working with large-scale, multidimensional arrays and data manipulation in scientific computing?

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