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

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

2. 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?

A) 5, 3
B) 4, 2, 0
C) 5, 4, 3, 2, 1
D) 5, 3, 1

3. 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?

A) 10
B) None
C) 5
D) Error

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

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

5. 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?

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

Solutions: