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Python Institute PCED-30-02 Exam Syllabus Topics:

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

1. You have collected sales data and want to compute the average using the NumPy library.
Which option correctly shows how to install NumPy and use it in your code to perform this task?

A) To install NumPy:
from pip install numpy
Then run this code:
import numpy as np
data = np.array([10, 20, 30])
print(np.mean(data))
B) To install NumPy:
pip install numpy
Then run this code:
import numpy as np
data = numpy.arr([10, 20, 30])
print(numpy.mean(data))
C) To install NumPy:
pip install numpy as np
Then run this code:
import np
data = np.array([10, 20, 30])
print(np.mean(data))

2. How do the analysis and visualization stages of the data lifecycle typically work together?

A) Analysis summarizes archived data, and visualization transforms it into structured tables for storage.
B) Analysis retrieves raw inputs from dashboards, while visualization uses that input to clean the data.
C) Analysis identifies patterns and insights in processed data, which are then communicated through visualizations for informed decision-making.
D) Analysis produces charts and graphs, while visualization interprets the data to detect outliers.

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

Which statements are most accurate? (Choose two.)

A) Leisure and meals combined equal the time spent at school.
B) School and homework together take up half of the day's time.
C) More time is spent commuting than on leisure.
D) Sleep and school take up the majority of time in a day.
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) Commuting is the second most time-consuming activity.

4. 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?

A) [1,2,3,[4,5]]
B) [4,5,1,2,3]
C) Error
D) [1,2,3,4,5]

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

Solutions: