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

1. 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) 5
C) None
D) Error

2. 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(', ')

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

Which statements are most accurate? (Choose two.)

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

4. A programmer writes a script to test operator precedence using the expression 3 + 4 * 2 ** 2. The goal is to evaluate the result correctly based on Python's operator hierarchy rules. What result should the script produce?

A) 19
B) 28
C) 35
D) 49

5. A dictionary is defined as d = {"a":1, "b":2}. The programmer accesses d["c"]. What happens when this line executes?

A) Returns None
B) Adds key automatically
C) Returns 0
D) Raises KeyError

Solutions: