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Python Institute PCED-30-02 Exam Syllabus Topics:

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

Question 1

You are writing a function to validate battery voltage readings. The rules are:
- If the reading is "MISSING"or None, return "Missing".
- If the value is below 2.5or above 4.2, return "Outlier".
Otherwise, return "Normal".
Which version correctly implements this logic using the most robust conditional and nested structures? Select the best answer.

A.

B.

C.

D.

Question 2

A student writes a program using input() to collect user data, then tries to add 5 to the input value without conversion. The program crashes. What is the most likely cause of this behavior?

A. input returns string
B. input returns float
C. input returns int
D. Syntax error

Question 3

A government agency collects citizen data for various public services.
What is the primary reason for emphasizing careful data management throughout the entire data lifecycle in this context? Select the best answer.

A. To guarantee the long-term availability and integrity of crucial citizen datasets for future policy formulation and evaluation.
B. To uphold data quality for effective service delivery, safeguard citizen privacy and prevent misuse, and comply with data protection laws.
C. To enable seamless sharing of anonymized citizen information with other governmental bodies for collaborative initiatives.
D. To streamline the initial capture of citizen details and minimize the administrative burden on both staff and the public.

Question 4

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

Question 5

You are given two lists representing daily page views and sign-ups on a website:
views = [120, 130, 128, 700, 115, 123, 119, 680, 122]
signups = [12, 15, 13, 50, 11, 14, 10, 55, 13]
You want to:
- remove outliers (views > 600), and
- calculate correlation between the cleaned lists.
Which code accomplishes this correctly? Select the best answer.

A.

B.

C.

D.

Solutions: