Course Content

Data Science Interview Challenge

1. Python

Introduction Challenge 1: List Comprehension Challenge 2: String Manipulation Challenge 3: Dictionary Manipulation Challenge 4: Nested Loops Challenge 5: Classes Theoretical Questions

2. NumPy

Challenge 1: Array Creation Challenge 2: Array Manipulation Challenge 3: Statistical Insights Challenge 4: Handling Missing Values Challenge 5: Subarray Sorting Theoretical Questions

3. Pandas

Challenge 1: DataFrame Creation Challenge 2: Data Grouping Challenge 3: Indexing and MultiIndexing Challenge 4: Altering DataFrame Challenge 5: Iterating Over Data Theoretical Questions

4. Matplotlib

Challenge 1: Fundamentals of Plotting Challenge 2: Other Graph Types Challenge 3: Subplots Challenge 4: Customizing Plots Challenge 5: Adding Text to Plots Theoretical Questions

5. Seaborn

Challenge 1: Visualizing Distributions Challenge 2: Exploring Categorical Data Challenge 3: Relational Plots Challenge 4: Regression Plots Challenge 5: Matrix Plots Theoretical Questions

6. Statistics

Challenge 1: Probabilities and Distributions Challenge 2: Bayes' Theorem Challenge 3: Hypothesis Testing Challenge 4: Confidence Intervals Challenge 5: Correlation Theoretical Questions

7. Scikit-learn

Challenge 1: Data Scaling Challenge 2: Basic Model Creation Challenge 3: Pipelines Challenge 4: Cross-validation Challenge 5: Hyperparameter Tuning Theoretical Questions

Challenge 3: Indexing and MultiIndexing

Pandas, an indispensable library in the data scientist's toolkit, offers robust indexing capabilities which are integral for data manipulation and retrieval.

Efficiency: Fast data access and manipulation is often dependent on smart indexing strategies, especially for larger datasets.
Flexibility: Whether it's basic row/column labels, hierarchical labels, or even date-time based indexing, Pandas has got you covered.
Readability: Descriptive indexing can render the code more intuitive and easier to follow, thereby streamlining the data exploration phase.

A solid grasp of indexing techniques, inclusive of multi indexing, can expedite tasks such as data retrieval, aggregation, and restructuring.

Task

Dive into indexing with Pandas through these tasks:

Set a column Date as the index of a DataFrame.
Reset the index of a DataFrame.
Create a DataFrame with a MultiIndex.
Access data from a MultiIndexed DataFrame with indices A and 1.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Section 3. Chapter 3

Challenge 3: Indexing and MultiIndexing

Pandas, an indispensable library in the data scientist's toolkit, offers robust indexing capabilities which are integral for data manipulation and retrieval.

Efficiency: Fast data access and manipulation is often dependent on smart indexing strategies, especially for larger datasets.
Flexibility: Whether it's basic row/column labels, hierarchical labels, or even date-time based indexing, Pandas has got you covered.
Readability: Descriptive indexing can render the code more intuitive and easier to follow, thereby streamlining the data exploration phase.

A solid grasp of indexing techniques, inclusive of multi indexing, can expedite tasks such as data retrieval, aggregation, and restructuring.

Task

Dive into indexing with Pandas through these tasks:

Set a column Date as the index of a DataFrame.
Reset the index of a DataFrame.
Create a DataFrame with a MultiIndex.
Access data from a MultiIndexed DataFrame with indices A and 1.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Section 3. Chapter 3

Challenge 3: Indexing and MultiIndexing

Pandas, an indispensable library in the data scientist's toolkit, offers robust indexing capabilities which are integral for data manipulation and retrieval.

Efficiency: Fast data access and manipulation is often dependent on smart indexing strategies, especially for larger datasets.
Flexibility: Whether it's basic row/column labels, hierarchical labels, or even date-time based indexing, Pandas has got you covered.
Readability: Descriptive indexing can render the code more intuitive and easier to follow, thereby streamlining the data exploration phase.

A solid grasp of indexing techniques, inclusive of multi indexing, can expedite tasks such as data retrieval, aggregation, and restructuring.

Task

Dive into indexing with Pandas through these tasks:

Set a column Date as the index of a DataFrame.
Reset the index of a DataFrame.
Create a DataFrame with a MultiIndex.
Access data from a MultiIndexed DataFrame with indices A and 1.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Pandas, an indispensable library in the data scientist's toolkit, offers robust indexing capabilities which are integral for data manipulation and retrieval.

Efficiency: Fast data access and manipulation is often dependent on smart indexing strategies, especially for larger datasets.
Flexibility: Whether it's basic row/column labels, hierarchical labels, or even date-time based indexing, Pandas has got you covered.
Readability: Descriptive indexing can render the code more intuitive and easier to follow, thereby streamlining the data exploration phase.

A solid grasp of indexing techniques, inclusive of multi indexing, can expedite tasks such as data retrieval, aggregation, and restructuring.

Task

Dive into indexing with Pandas through these tasks:

Set a column Date as the index of a DataFrame.
Reset the index of a DataFrame.
Create a DataFrame with a MultiIndex.
Access data from a MultiIndexed DataFrame with indices A and 1.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Section 3. Chapter 3

Switch to desktop for real-world practiceContinue from where you are using one of the options below