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Python Institute PCED-30-02 Exam Syllabus Topics:

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

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                          Python Institute PCED - Certified Entry-Level Data Analyst with Python Sample Questions (Q34-Q39):

                          NEW QUESTION # 34
                          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: D

                          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 # 35
                          A script attempts to divide two numbers using / and //. The values are 7 and 2. The developer wants to understand the difference between true division and floor division. What are the results respectively?

                          Answer: A

                          Explanation:
                          The / operator performs true division, returning a float result of 3.5. The // operator performs floor division, truncating the decimal part and returning the integer value 3.


                          NEW QUESTION # 36
                          A list is defined as [1, 2, 3]. The programmer uses the method .append([4, 5]). What will the resulting list look like after execution?

                          Answer: C

                          Explanation:
                          The append() method adds its argument as a single element. Therefore, the list [4, 5] is added as one nested list, resulting in [1, 2, 3, [4, 5]].


                          NEW QUESTION # 37
                          A dictionary is defined as d = {"a":1, "b":2}. The programmer accesses d["c"]. What happens when this line executes?

                          Answer: A

                          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 # 38
                          A program compares two values using == and is. The variables a = 256 and b = 256 are defined.
                          What is the expected result of a is b in most Python implementations?

                          Answer: B

                          Explanation:
                          Python caches small integers for efficiency. Since 256 is typically within the cached range, both variables reference the same object in memory, making a is b evaluate to True.


                          NEW QUESTION # 39
                          ......

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