Python Institute PCED-30-02 PDF Dumps file

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Python Institute PCED-30-02 Exam Syllabus Topics:

SectionObjectives
Topic 1: Data Analysis and Visualization- Data cleaning and preprocessing
  • 1. Data transformation techniques
    • 2. Missing values handling
      - Data visualization
      • 1. Matplotlib basics
        • 2. Plot interpretation
          Topic 2: Data Handling and Processing with Python- Working with data structures
          • 1. Lists, tuples, dictionaries
            • 2. Iterating and transformations
              - Data manipulation libraries
              • 1. Pandas fundamentals
                • 2. NumPy basics
                  Topic 3: Python Programming Fundamentals- Basic syntax and data types
                  • 1. Variables and operators
                    • 2. Control flow basics
                      Topic 4: Basic Statistics for Data Analysis- Descriptive statistics
                      • 1. Variance and standard deviation
                        • 2. Mean, median, mode

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

                          NEW QUESTION # 34
                          A list is reversed using slicing: lst[::-1]. The programmer wants to confirm whether this modifies the original list or creates a new one. What is the correct behavior?

                          Answer: A

                          Explanation:
                          Slicing creates a new list object rather than modifying the original. The expression lst[::-1] returns a reversed copy, leaving the original list unchanged.


                          NEW QUESTION # 35
                          You have a list of test scores, where each entry includes a student name and a score. Some students appear more than once. You want to compute the average score for each student and store the results in a dictionary. Here's the partial code block:

                          Which code correctly replaces the # MISSING CODE comment to calculate the average score for each student? Select the best answer.

                          Answer: C

                          Explanation:
                          It iterates through each record, extracts the name and score, and uses dictionary .get() to accumulate total scores and counts per student safely, initializing missing keys to zero. This correctly enables calculation of each student's average afterward.


                          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: D

                          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 Python script includes the expression not False and True. The developer is unsure how logical operators are evaluated in terms of precedence. What will be the final Boolean result of this expression?

                          Answer: B

                          Explanation:
                          The not operator has higher precedence than and, so not False becomes True first. Then True and True is evaluated, resulting in True as the final Boolean value.


                          NEW QUESTION # 38
                          A variable is assigned using chained assignment: a = b = c = 10. The developer then changes b =
                          5. What will be the value of a after this operation?

                          Answer: D

                          Explanation:
                          Integers are immutable in Python. Reassigning b to a new value does not affect a or c, which still reference the original integer value 10.


                          NEW QUESTION # 39
                          ......

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