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Data Science Interview Challenge
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Data Science Interview Challenge

Data Science Interview Challenge

1. Python
IntroductionChallenge 1: List ComprehensionChallenge 2: String ManipulationChallenge 3: Dictionary ManipulationChallenge 4: Nested LoopsChallenge 5: ClassesTheoretical Questions
2. NumPy
Challenge 1: Array CreationChallenge 2: Array ManipulationChallenge 3: Statistical InsightsChallenge 4: Handling Missing ValuesChallenge 5: Subarray SortingTheoretical Questions
3. Pandas
Challenge 1: DataFrame CreationChallenge 2: Data GroupingChallenge 3: Indexing and MultiIndexingChallenge 4: Altering DataFrameChallenge 5: Iterating Over DataTheoretical Questions
4. Matplotlib
Challenge 1: Fundamentals of PlottingChallenge 2: Other Graph TypesChallenge 3: SubplotsChallenge 4: Customizing PlotsChallenge 5: Adding Text to PlotsTheoretical Questions
5. Seaborn
Challenge 1: Visualizing DistributionsChallenge 2: Exploring Categorical DataChallenge 3: Relational PlotsChallenge 4: Regression PlotsChallenge 5: Matrix PlotsTheoretical Questions
6. Statistics
Challenge 1: Probabilities and DistributionsChallenge 2: Bayes' TheoremChallenge 3: Hypothesis TestingChallenge 4: Confidence IntervalsChallenge 5: CorrelationTheoretical Questions
7. Scikit-learn
Challenge 1: Data ScalingChallenge 2: Basic Model CreationChallenge 3: PipelinesChallenge 4: Cross-validationChallenge 5: Hyperparameter TuningTheoretical Questions

book
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.

Uppgift

Swipe to start coding

Dive into indexing with Pandas through these tasks:

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

Lösning

Switch to desktopByt till skrivbordet för praktisk övningFortsätt där du är med ett av alternativen nedan
Var allt tydligt?

Hur kan vi förbättra det?

Tack för dina kommentarer!

Avsnitt 3. Kapitel 3
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book
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.

Uppgift

Swipe to start coding

Dive into indexing with Pandas through these tasks:

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

Lösning

Switch to desktopByt till skrivbordet för praktisk övningFortsätt där du är med ett av alternativen nedan
Var allt tydligt?

Hur kan vi förbättra det?

Tack för dina kommentarer!

Avsnitt 3. Kapitel 3
Switch to desktopByt till skrivbordet för praktisk övningFortsätt där du är med ett av alternativen nedan
Vi beklagar att något gick fel. Vad hände?
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