FREE CBDA Business Data Analytics Techniques Questions and Answers

Question 1

An e-commerce company wants to segment its customers into distinct groups based on purchasing behaviors, such as purchase frequency, monetary value, and product categories viewed. The goal is to create more targeted marketing campaigns, but the groups are not predefined. Which data analytics technique is MOST appropriate for this task?

Accepted Answer

Clustering Analysis

Answer

Clustering analysis is an unsupervised machine learning technique used to group data points based on their inherent similarities. It is ideal for customer segmentation where the goal is to discover natural groupings in the data without predefined labels. [1, 8, 20]

Question 2

A marketing team wants to determine if changing the color of a 'Buy Now' button on their website from blue to green will increase the click-through rate. They decide to randomly show the blue button to 50% of website visitors and the green button to the other 50%, then compare the results. What is the name of this analytical technique?

Accepted Answer

A/B Testing

Answer

A/B testing, also known as split testing, is a randomized experiment with two variants (A and B). It is a form of statistical hypothesis testing used to compare two versions of a single variable to determine which one performs better in achieving a specific goal, such as increasing click-through rates. [4, 6, 16, 30]

Question 3

A business data analyst creates a dashboard that not only shows a decline in sales over the last quarter but also includes drill-down capabilities that allow managers to see the decline is primarily happening in a specific region and is linked to a product line that recently had a price increase. This type of analysis, which focuses on understanding the reason for past performance, is known as what?

Accepted Answer

Diagnostic Analytics

Answer

Diagnostic analytics focuses on answering the question, 'Why did it happen?'. It involves techniques like drill-down, data discovery, and correlation analysis to understand the root causes of past events, which is exactly what the analyst is enabling in this scenario. [3, 7, 24]

Question 4

A business analyst needs to create a visualization to explore the relationship and potential correlation between two continuous numerical variables: 'advertising spend' and 'website traffic'. Which of the following chart types is the MOST effective choice for this purpose?

Accepted Answer

Scatter Plot

Answer

A scatter plot is the standard and most effective way to visualize the relationship between two continuous numerical variables. Each point on the plot represents an observation for both variables, making it easy to see patterns, correlations, and outliers. [13, 18, 25, 27]

Question 5

Before building a new analytics database, a data analyst creates a high-level diagram that defines the key business entities (like 'Customer', 'Product', 'Order'), their attributes, and the relationships between them. This diagram is created with business stakeholders and is independent of any specific database technology. What type of data model is the analyst creating?

Accepted Answer

Conceptual Data Model

Answer

A conceptual data model is a high-level model that defines the entities, attributes, and relationships relevant to a business domain. [9] It is created to ensure business requirements are understood and is independent of technology specifics, which are addressed later in the logical and physical models. [2, 11, 19]

CBDA - Certified Business Data Analyst Practice Test

CBDA - Certified Business Data Analyst Practice Test

FREE CBDA Business Data Analytics Techniques Questions and Answers