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Python Institute PCED-30-02 Exam Syllabus Topics:

SectionObjectives
Basic Statistics for Data Analysis- Descriptive statistics
  • 1. Mean, median, mode
    • 2. Variance and standard deviation
      Python Programming Fundamentals- Basic syntax and data types
      • 1. Variables and operators
        • 2. Control flow basics
          Data Handling and Processing with Python- Working with data structures
          • 1. Iterating and transformations
            • 2. Lists, tuples, dictionaries
              - Data manipulation libraries
              • 1. Pandas fundamentals
                • 2. NumPy basics
                  Data Analysis and Visualization- Data visualization
                  • 1. Plot interpretation
                    • 2. Matplotlib basics
                      - 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 (Q43-Q48):

                          NEW QUESTION # 43
                          You are writing a function named process_data()to read and process numerical input from a file. The function must:
                          - read the file data.txt,
                          - attempt to convert the first line into an integer,
                          - handle file, conversion, or index-related exceptions,
                          - print the value only if no error occurs,
                          - and always print a final message after execution.
                          Which implementation correctly and robustly meets all these conditions? Select the best answer.

                          Answer: B

                          Explanation:
                          It wraps file reading and integer conversion in a try block, catches the relevant file, conversion, and indexing exceptions, prints the value only in the no-error path using an else block, and uses a finally block to always print the final message.


                          NEW QUESTION # 44
                          Consider a Python program that assigns a string value "5" to a variable and then attempts to multiply it by an integer 3. The programmer expects numeric multiplication. What will actually happen when the code is executed?

                          Answer: A

                          Explanation:
                          In Python, multiplying a string by an integer repeats the string. Therefore, "5" * 3 produces "555", not a numeric result. This behavior differs from arithmetic multiplication and often confuses beginners.


                          NEW QUESTION # 45
                          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: C

                          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 # 46
                          A data analyst exports a cleaned dataset from Python and wants to share it with a colleague for easy use in Excel.
                          Which file format is best suited for this purpose? Select the best answer.

                          Answer: D

                          Explanation:
                          CSV stores tabular data in a simple plain-text, comma-separated format that is widely supported by spreadsheet applications like Excel, making it ideal for sharing datasets for easy import and analysis.


                          NEW QUESTION # 47
                          An online retailer collects customer reviews, order transaction logs, and product ratings.
                          Which of the following correctly classifies these types of data? Select the best answer.

                          Answer: A

                          Explanation:
                          Product ratings are numeric values stored in fixed fields, making them quantitative and structured.
                          Customer reviews are free-text responses, which are qualitative and unstructured. Transaction logs consist of organized records with defined fields such as order ID, date, and amount, making them structured and quantitative.


                          NEW QUESTION # 48
                          ......

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