IIBA-CBDA

IIBA-CBDA practice questions, page 5 of 6, with answer review and explanations.

Question 21

A large car manufacturer is interested in comparing the number of sales for a specific model of electric car across all 50 US states. The data analytics team sourced and acquired the data, and the business analyst created the model to compare sales across states. In a meeting to review the results, the feedback received included several complaints concerning an inability to distinguish the number of sales per state. What model would result in such confusion?

  1. Pie chart
  2. Dual axis chart
  3. Bullet chart
  4. Bar chart

Question 22

An analyst at a phone manufacturing company is preparing a dashboard for Senior Executives that will cover past year's performance. It will be used in the upcoming senior leadership team meeting to make strategic decisions for the new year. While analyzing the data, the analyst found a lot of interesting revelations related to performance. What should the analyst keep in mind when preparing the Executive dashboard?

  1. Keep it detailed so one dashboard can be shared to all levels of the organization
  2. Keep it detailed if there is a lot of good information to share
  3. Keep it high-level, summarizing key insights and metrics
  4. Keep some sections high-level, and some sections detailed

Question 23

A professional association is funded by membership fees. The membership renewal occurs every 5 years. Although, they have a strong subscription rate each year, their renewal rate is low. They are working with an external firm specializing in Business Analytics to identify the groups of customers that have a high likelihood of cancelling their subscription after their first 5-year term ends. This type of study is called:

  1. Supervised learning
  2. Untrained learning
  3. Trained learning
  4. Unsupervised learning

Question 24

The architecture team puts forth a solution architecture that integrates multiple data sources from within and outside the organization. The architecture provides the foundation to source a new analytics program. If one of the objectives of the analytics team was to provide ‘one source of the truth’, this objective would be referring to which of the following?

  1. Evaluating the completeness, validity, and reliability of the data from source systems
  2. Identifying one key stakeholder, who can make final decisions about which sources to relate/merge
  3. Enforcing master data management principles and practices
  4. Ensuring stakeholders always have clear insight into the final requirements at all times

Question 25

A government agency is conducting a study on the performance of 12th grade students in mathematics across the country. In particular, they want to understand if there is a relationship between intelligence and scores, as well as the difference in performance between various locations. Which combination of inferential statistics procedures should be used?

  1. Frequency distribution, time-series
  2. Range, standard deviation
  3. Correlation co-efficient, analysis of variance
  4. Mean, median