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
Which of the following techniques is used to handle missing data in a dataset?
- A . Data transformation
- B . Principal Component Analysis
- C . Imputation
- D . Feature selection
Which of the following is NOT a valid data type in Python?
- A . integer
- B . string
- C . character
- D . boolean
What is the purpose of data pre-processing in a data analytics workflow?
- A . To make the data more difficult to analyze
- B . To remove noise and irrelevant information
- C . To increase the computational complexity
- D . To slow down the data analysis process
Which of the following is an example of structured data in the context of data acquisition?
- A . Images
- B . Text files
- C . CSV file
- D . PDFs
What is the purpose of conducting an ANOVA test?
- A . To compare the means of more than two independent groups
- B . To compare the means of two paired groups
- C . To calculate the correlation coefficient between two variables
- D . To test the normality of a dataset
Which of the following regression techniques is appropriate when the target variable is categorical?
- A . Linear regression
- B . Ridge regression
- C . Logistic regression
- D . Lasso regression
What does covariance measure in terms of two variables?
- A . Only the strength of the linear relationship
- B . The direction of the relationship
- C . The shape of the relationship
- D . Both the direction and the strength of the linear relationship
Which of the following techniques can be used in data pre-processing for feature selection?
- A . Principal Component Analysis (PCA)
- B . Support Vector Machines (SVM)
- C . k-Nearest Neighbors (k-NN)
- D . Linear Regression
Which measure of central tendency is affected by outliers?
- A . Mean
- B . Median
- C . Mode
- D . Range
When importing a CSV file into Python for data analysis, which library is commonly used for data
manipulation and cleaning?
- A . numpy
- B . pandas
- C . scikit-learn
- D . matplotlib