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

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

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

A) Analysis retrieves raw inputs from dashboards, while visualization uses that input to clean the data.
B) Analysis summarizes archived data, and visualization transforms it into structured tables for storage.
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. 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))

4. What will be the output of the following code?

A) 5 5
B) 10 10
C) 10 5
D) 5 10

5. You want to safely read the contents of a file named records.txtand store them in a list. Your requirements are:
- The file should be automatically closed after reading,
- The code should check whether the file exists before opening it, and
- It should handle missing file errors gracefully.
Which of the following is the most appropriate way to accomplish this task in Python? Select the best answer.

A)

B)

C)

D)

Solutions: