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Python Institute PCED-30-02 Exam Syllabus Topics:

SectionObjectives
Data Handling and Processing with Python- Data manipulation libraries
  • 1. NumPy basics
    • 2. Pandas fundamentals
      - Working with data structures
      • 1. Lists, tuples, dictionaries
        • 2. Iterating and transformations
          Python Programming Fundamentals- Basic syntax and data types
          • 1. Variables and operators
            • 2. Control flow basics
              Basic Statistics for Data Analysis- Descriptive statistics
              • 1. Variance and standard deviation
                • 2. Mean, median, mode
                  Data Analysis and Visualization- Data visualization
                  • 1. Matplotlib basics
                    • 2. Plot interpretation
                      - Data cleaning and preprocessing
                      • 1. Missing values handling
                        • 2. Data transformation techniques

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                          Python Institute PCED - Certified Entry-Level Data Analyst with Python Sample Questions (Q26-Q31):

                          NEW QUESTION # 26
                          Which task is traditionally or typically performed by a data analyst, and not by a data scientist or analytics specialist? Select the best answer.

                          Answer: A

                          Explanation:
                          Creating summary tables and charts to describe patterns in historical data is a core responsibility of a data analyst, focusing on descriptive analytics and reporting rather than building predictive models, machine learning systems, or engineering data pipelines.


                          NEW QUESTION # 27
                          Which of the following code snippets will output Truefor both printfunctions by correctly identifying the type of each variable and performing valid operations?

                          Answer: A

                          Explanation:
                          Adding an integer and a float produces a float result, so checking that the type of the sum is float evaluates to True. The variable holding 3.0 is a float, so the isinstance check for float also evaluates to True.


                          NEW QUESTION # 28
                          What will be the output of the following code?

                          Answer: D

                          Explanation:
                          The function declares the variable as global and assigns it the value 5. When the function is called, it updates the global variable and returns 5, so both the returned value and the global variable printed afterward are 5.


                          NEW QUESTION # 29
                          You want to safely read the contents of a file named records.txtand store them in a list. Your requirements are:
                          - The file should be automatically closed after reading,
                          - The code should check whether the file exists before opening it, and
                          - It should handle missing file errors gracefully.
                          Which of the following is the most appropriate way to accomplish this task in Python? Select the best answer.

                          Answer: D

                          Explanation:
                          It uses a context manager to automatically close the file after reading and wraps the operation in a try-except block to gracefully handle a missing file error, assigning an empty list if the file is not found.


                          NEW QUESTION # 30
                          A script defines a variable x = None and checks its truth value using a conditional statement. The developer wants to understand how Python evaluates None in Boolean contexts. What will bool(x) return?

                          Answer: A

                          Explanation:
                          The value None represents the absence of a value and is treated as False in Boolean expressions. Therefore, calling bool(None) returns False, similar to empty containers or zero values.


                          NEW QUESTION # 31
                          ......

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