Python Institute PCED-30-01 Practice Exams
Last updated on Oct 22,2026- Exam Code: PCED-30-01
- Exam Name: Certified Entry-Level Data Analyst with Python
- Certification Provider: Python Institute
- Latest update: Oct 22,2026
What type of plot would be most suitable for showing the distribution of a single numerical variable?
- A . Scatter plot
- B . Bar plot
- C . Histogram
- D . Box plot
Which statistical test is appropriate for comparing means between two independent groups?
- A . Paired t-test
- B . Wilcoxon signed-rank test
- C . Independent samples t-test
- D . ANOVA
Which type of visualization is commonly used to show the relationship between two numerical variables?
- A . Scatter plot
- B . Bar chart
- C . Line chart
- D . Box plot
Which of the following metrics is commonly used to evaluate classification models in data analytics?
- A . Mean Squared Error
- B . Receiver Operating Characteristic (ROC) curve
- C . R-squared
- D . Accuracy
What type of plot would be most suitable for comparing the distribution of a numerical variable across different categories?
- A . Scatter plot
- B . Pie chart
- C . Box plot
- D . Bar plot
In a line plot, what do the points connected by a line represent?
- A . Mean values
- B . Median values
- C . Maximum values
- D . Sequential data points
Which of the following is an example of a classification algorithm used in data analysis and modeling?
- A . K-means clustering
- B . Linear regression
- C . Decision tree
- D . Principal component analysis
Which of the following is not a common source of data for data acquisition in Python?
- A . CSV files
- B . JSON files
- C . SQLite databases
- D . HTML files
What type of analysis is used to examine relationship between two continuous variables in statistical analysis?
- A . Regression analysis
- B . ANOVA
- C . Chi-square test
- D . Factor analysis
What is the primary purpose of data visualization in data analytics?
- A . To make the data more difficult to understand
- B . To communicate insights from data effectively
- C . To hide information from stakeholders
- D . To slow down the decision-making process