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

1. You are given the following list of daily step counts:
steps = [8230, 9020, 7640, 8760, 10020, 2546, 9817]
Your task is to calculate:
- the standard deviation of the step counts,
- the average rounded up to the nearest whole number, and
- the median of the step counts.
Which code snippet correctly performs all three tasks? Select the best answer.
import statistics

A) import math
print(statistics.variance(steps))
print(math.ceil(sum(steps) / len(steps)))
print(math.floor(statistics.median(steps)))
import statistics
B) import math
print(statistics.stdev(steps))
print(round(math.mean(steps)))
print(math.median(steps))
import statistics
C) import math
print(math.stdev(steps))
print(statistics.mean(steps))
print(statistics.median(steps))
import statistics
D) import math
print(statistics.stdev(steps))
print(math.ceil(statistics.mean(steps)))
print(statistics.median(steps))

2. 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) School and homework together take up half of the day's time.
C) Commuting is the second most time-consuming activity.
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) Leisure and meals combined equal the time spent at school.
F) More time is spent commuting than on leisure.

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

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

4. A Python script checks membership using "a" in "apple". The developer wants to understand how membership works for strings. What result will this expression produce?

A) Error
B) None
C) False
D) True

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

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

Solutions: