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Python Institute PCED - Certified Entry-Level Data Analyst with Python Sample Questions:

1. A program uses slicing on a string "Python". The expression s[1:4] is evaluated. Which substring will be returned?

A) tho
B) ytho
C) yth
D) ythn

2. You are reading a data.csvfile line by line. To prepare each line for formatting with f-strings, you need to remove extra whitespace and split the values by commas.
Which line should you insert to correctly clean and parse the input?

A) fields = line.replace(', ', '|').split('|')
B) fields = line.split().strip(', ')
C) fields = line.strip().split(', ')
D) fields = line.split(', ').trim()

3. Consider the following Python code:

What will be printed when the code above is executed?
40

A) [10, 20, 30, 40]
1
[1, 2, 4, 5, 6]
50
B) [20, 30, 40]
1
[1, 2, 4, 5, 6]
C) [10, 20, 30, 40]
0
[1, 2, 3, 4, 5, 6]
50
D) [20, 30, 40]
1
[1, 2, 4, 5, 6]
50

4. 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?

A) Error
B) False
C) None
D) True

5. 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.

A) The lines are too light and similar in color, making it difficult to distinguish between trends.
B) The graph doesn't explain what each stress level means or show exact values for each month, which limits interpretation.
C) The chart should be in 3D format to show depth and highlight differences more clearly.
D) The months should be replaced with week numbers to provide more detailed insight.
E) The font used in the chart is hard to read; using larger, uppercase text would improve clarity.

Solutions: