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 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
Which file format is commonly used for sharing interactive visualizations created using Tableau?
- A . .csv
- B . .twb
- C . .xlsx
- D . .pdf
Which of the following data types is NOT supported in Python?
- A . Integer
- B . Float
- C . Double
- D . Complex
What type of plot is best suited for comparing multiple categories and displaying the distribution of a variable?
- A . Pie chart
- B . Scatter plot
- C . Box plot
- D . Bar chart
What is the difference between supervised and unsupervised learning in data analysis?
- A . Supervised learning requires labeled data, while unsupervised learning does not
- B . Supervised learning does not require a target variable
- C . Unsupervised learning predicts future outcomes based on historical data
- D . Supervised learning is used for classification, while unsupervised learning is used for regression
In a line chart, which axis typically represents the time or chronological sequence of events?
- A . X-axis
- B . Y-axis
Which of the following can be used for data acquisition in Python programming?
- A . Pandas
- B . Matplotlib
- C . NumPy
- D . Requests
When to use ANOVA in statistical analysis?
- A . When comparing means of two independent groups
- B . When comparing the means of more than two groups
- C . When analyzing correlation between variables
- D . When analyzing categorical data
When dealing with missing data in a dataset, what is a common approach for handling it?
- A . Filling missing values with the mean of the column
- B . Removing the entire row with missing data
- C . Filling missing values with a random number
- D . Ignoring the missing values
What is the purpose of hypothesis testing in statistical analysis?
- A . To prove the null hypothesis
- B . To validate assumptions made about the population
- C . To determine if there is a statistically significant difference between groups
- D . To summarize data using descriptive statistics