PCED-30-02 Vorbereitungsfragen & PCED-30-02 Deutsche Prüfungsfragen

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Python Institute PCED-30-02 Exam Syllabus Topics:

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

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Python Institute PCED - Certified Entry-Level Data Analyst with Python PCED-30-02 Prüfungsfragen mit Lösungen (Q23-Q28):

23. Frage
A script attempts to divide two numbers using / and //. The values are 7 and 2. The developer wants to understand the difference between true division and floor division. What are the results respectively?

A. 4 and 3
B. 3 and 4
C. 3.5 and 3
D. 3 and 3.5

Antwort: C

Begründung:
The / operator performs true division, returning a float result of 3.5. The // operator performs floor division, truncating the decimal part and returning the integer value 3.

24. Frage
You are developing a temperature control module for a laboratory incubator. Your objectives are to:
- generate timestamps every 10 minutes over a 3-hour span (i.e., 0 to 180 minutes), and
- simulate five evenly spaced target temperatures between 35.0°C and 37.0°C for system calibration.
Which code snippet correctly produces both sequences using NumPy? Select the best answer.
import numpy as np

A. timestamps = np.linspace(0, 180, 10)
target_temps = np.arange(35.0, 37.0, 5)
import numpy as np
B. timestamps = np.arange(0, 181, 10)
target_temps = np.linspace(35.0, 37.0, 5)
C. timestamps = np.linspace(0, 181, 10)
target_temps = np.arange(35.0, 37.0, 0.5)
import numpy a3 np
D. timestamps = np.arange(0, 180, 10)
target_temps = np.linspace(35.0, 37.0, 4)
import numpy as np

Antwort: B

Begründung:
np.arange(0, 181, 10) generates timestamps from 0 through 180 in 10-minute steps (end is excluded, so using 181 includes 180). np.linspace(35.0, 37.0, 5) generates five evenly spaced temperatures including both 35.0°C and 37.0°C.

25. Frage
A program uses while False: followed by print statements inside the loop. The developer expects output. What will actually happen during execution?

A. Prints once
B. Error
C. No execution
D. Infinite loop

Antwort: C

Begründung:
The condition False is evaluated before entering the loop. Since it is always false, the loop body is never executed, and no output is produced.

26. Frage
The following chart shows how a student spends 24 hours in a day:

Which statements are most accurate? (Choose two.)

A. Sleep and school take up the majority of time in a day.
B. More time is spent commuting than on leisure.
C. Leisure and meals combined equal the time spent at school.
D. Commuting is the second most time-consuming activity.
E. Leisure accounts for a moderate portion of the student's daily schedule, larger than commuting but smaller than the time spent at school.
F. School and homework together take up half of the day's time.

Antwort: A,E

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

Antwort: C

Begründung:
The lines are very light and visually similar, making it difficult to clearly distinguish between the different stress level trends, which directly reduces the effectiveness of the visualization in communicating patterns over time.

28. Frage
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