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Python Institute PCED-30-02 Exam Syllabus Topics:

SectionObjectives
Data Analysis and Visualization- Data cleaning and preprocessing
  • 1. Missing values handling
    • 2. Data transformation techniques
      - Data visualization
      • 1. Matplotlib basics
        • 2. Plot interpretation
          Basic Statistics for Data Analysis- Descriptive statistics
          • 1. Mean, median, mode
            • 2. Variance and standard deviation
              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. Control flow basics
                        • 2. Variables and operators

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                          Python Institute PCED - Certified Entry-Level Data Analyst with Python Sample Questions (Q22-Q27):

                          NEW QUESTION # 22
                          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 # 23
                          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 # 24
                          You are given a short Python script that uses both arithmetic and assignment operators. The variable x is initialized as 4, then updated using x *= 2 + 3. What will be printed when the final value of x is displayed?

                          Answer: D

                          Explanation:
                          Python evaluates the addition first because of operator precedence. The expression 2 + 3 equals
                          5, then x *= 5 multiplies the current value of x (4) by 5, resulting in a final value of 20.


                          NEW QUESTION # 25
                          A Python loop uses range(5, 0, -2) to iterate backward. The programmer expects a decreasing sequence. Which values will actually be generated when this loop runs?

                          Answer: C

                          Explanation:
                          The range starts at 5 and decreases by 2 each step until it reaches a value greater than 0. The generated sequence is 5, 3, and 1.


                          NEW QUESTION # 26
                          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 # 27
                          ......

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