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Python Institute PCED-30-02 Exam Syllabus Topics:

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

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                          Python Institute PCED - Certified Entry-Level Data Analyst with Python Sample Questions (Q25-Q30):

                          NEW QUESTION # 25
                          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: B

                          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 # 26
                          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 # 27
                          How do the analysis and visualization stages of the data lifecycle typically work together?

                          Answer: B

                          Explanation:
                          Analysis involves examining processed data to uncover patterns, trends, and insights, and visualization presents those findings in graphical form so stakeholders can clearly understand and act on the results.


                          NEW QUESTION # 28
                          A Python developer is testing truth values of different data types using the bool() function. The expression bool([0]) is evaluated in the script. What result should be expected when this expression is printed?

                          Answer: B

                          Explanation:
                          In Python, any non-empty list evaluates to True in a Boolean context. Even though the element inside the list is zero, the list itself is not empty, so the result is True.


                          NEW QUESTION # 29
                          A loop includes a break statement when a condition is met. The programmer wants to understand how break affects loop execution. What happens when break is executed inside the loop?

                          Answer: A

                          Explanation:
                          The break statement immediately terminates the loop, regardless of remaining iterations. Control is transferred to the first statement following the loop block.


                          NEW QUESTION # 30
                          ......

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