Python Institute PCED-30-01 Practice Exams
Last updated on Oct 21,2026- Exam Code: PCED-30-01
- Exam Name: Certified Entry-Level Data Analyst with Python
- Certification Provider: Python Institute
- Latest update: Oct 21,2026
Which function in Matplotlib can be used to create a scatter plot?
- A . barplot()
- B . scatter()
- C . lineplot()
- D . histogram()
Which measure of central tendency is influenced by outliers in a dataset?
- A . Mean
- B . Median
- C . Mode
- D . Range
Which statistical measure is used to assess the spread of data around the mean?
- A . Median
- B . Range
- C . Standard deviation
- D . Variance
What is the goal of feature selection in data modeling?
- A . To add more noise to the data
- B . To reduce the complexity of the model
- C . To overfit the model
- D . To increase the accuracy of the model
Which statistical test is appropriate for determining whether there is a significant relationship between two categorical variables?
- A . Chi-square test
- B . One-way ANOVA
- C . Pearson correlation
- D . Independent t-test
Which statistical analysis method is appropriate for determining if there is a significant difference in group means when there are multiple groups?
- A . T-test
- B . ANOVA
- C . Chi-square test
- D . Regression analysis
What is the output of the following code snippet? “`python x = 5 y = 2 print(x ** y) “`
- A . 7
- B . 10
- C . 25
- D . 32
Which of the following visualization libraries in Python is commonly used for creating interactive plots and dashboards?
- A . Matplotlib
- B . Seaborn
- C . Plotly
- D . Pandas
Which of the following loop constructs is NOT supported in Python?
- A . for loop
- B . while loop
- C . do-while loop
- D . until loop
What is the purpose of the ‘for’ loop in Python?
- A . Declares a new function
- B . Repeats a block of code for a specified number of times
- C . Allows for looping over elements of a sequence
- D . Terminates the execution of a loop