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Python Institute PCED-30-02 Exam Syllabus Topics:

SectionObjectives
Topic 1: Python Programming Fundamentals- Basic syntax and data types
  • 1. Control flow basics
    • 2. Variables and operators
      Topic 2: Basic Statistics for Data Analysis- Descriptive statistics
      • 1. Variance and standard deviation
        • 2. Mean, median, mode
          Topic 3: Data Analysis and Visualization- Data visualization
          • 1. Matplotlib basics
            • 2. Plot interpretation
              - Data cleaning and preprocessing
              • 1. Data transformation techniques
                • 2. Missing values handling
                  Topic 4: 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

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                          Python Institute PCED - Certified Entry-Level Data Analyst with Python Sample Questions (Q47-Q52):

                          NEW QUESTION # 47
                          You are creating a presentation slide to communicate findings about student stress levels across four categories over a six-month period. You include the following line graph in your presentation:

                          Your goal is to help your audience clearly understand trends in stress levels over time.
                          What is the highest problem with this visual presentation? Select the best answer.

                          Answer: C

                          Explanation:
                          The lines are very light and visually similar, making it difficult to clearly distinguish between the different stress level trends, which directly reduces the effectiveness of the visualization in communicating patterns over time.


                          NEW QUESTION # 48
                          A dictionary is defined as d = {"a":1, "b":2}. The programmer accesses d["c"]. What happens when this line executes?

                          Answer: B

                          Explanation:
                          Accessing a non-existent key using square brackets raises a KeyError. Python does not automatically create missing keys, so the program will terminate unless the exception is handled.


                          NEW QUESTION # 49
                          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 # 50
                          A programmer writes a script to test operator precedence using the expression 3 + 4 * 2 ** 2. The goal is to evaluate the result correctly based on Python's operator hierarchy rules. What result should the script produce?

                          Answer: B

                          Explanation:
                          Exponentiation is evaluated first, so 2 ** 2 equals 4. Then multiplication 4 * 4 equals 16. Finally, addition is performed: 3 + 16 results in 19.


                          NEW QUESTION # 51
                          A Python script checks membership using "a" in "apple". The developer wants to understand how membership works for strings. What result will this expression produce?

                          Answer: A

                          Explanation:
                          The in operator checks for substring presence. Since the character "a" exists in "apple", the expression evaluates to True, demonstrating how membership works for strings in Python.


                          NEW QUESTION # 52
                          ......

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