Practice Free PCED-30-01 Exam Online Questions
Question #41
Which of the following is an advantage of using seaborn for data visualization in Python?
- A . Limited customization options
- B . High-level interface for creating attractive plots
- C . Slow rendering speed
- D . Limited compatibility with other libraries
Correct Answer: B
Question #42
What is the purpose of data analysis in the context of a Python programming for data analytics?
- A . To collect data
- B . To visualize data
- C . To interpret data
- D . To delete data
Correct Answer: C
Question #43
What is the correct way to comment a single line of code in Python?
- A . // This is a comment
- B . /* This is a comment */
- C . # This is a comment
Correct Answer: C
Question #44
In clustering analysis, what is the goal of the K-means algorithm?
- A . To minimize within-cluster variance
- B . To maximize between-cluster variance
- C . To identify outliers in the dataset
- D . To draw decision boundaries between classes
Correct Answer: A
Question #45
When conducting a hypothesis test, the p-value represents:
- A . The probability that the null hypothesis is true
- B . The probability of observing the data given that the null hypothesis is true
- C . The confidence level of the hypothesis test
- D . The probability of making a Type I error
Correct Answer: B
Question #46
What is the purpose of data modeling in the context of data analysis?
- A . To create visualizations of data
- B . To predict future trends based on historical data
- C . To summarize and transform raw data into a more understandable format
- D . To explore relationships between variables within a dataset
Correct Answer: D
Question #47
Question #48
Which of the following loop constructs is NOT supported in Python?
- A . for loop
- B . while loop
- C . do-while loop
- D . until loop
Correct Answer: C
Question #49
What does the "len()" function in Python do?
- A . Returns the sum of all elements in a list
- B . Returns the average of elements in a list
- C . Returns the number of elements in a list
- D . Returns the maximum value in a list
Correct Answer: C
Question #50
Which type of chart is best used to show the relationship between two numerical variables?
- A . Bar chart
- B . Line plot
- C . Scatter plot
- D . Pie chart
Correct Answer: C