Free IIBA CBDA Exam Questions

An analyst is looking at a particular dataset that includes the scores across all 8th grade students, across three schools. The analyst is trying to determine which type of statistics average to use to best represent the results. On looking through the dataset, the analyst has identified a few extreme outliers. As a result, the analyst was led to use the following type of average: 

The marketing department for a major restaurant chain is interested in testing a Kids Eat Free campaign to

determine if it will help to increase sales. They are interested in piloting the campaign to determine which day

of the week will improve sales the most.

The campaign is launched across 7 cities with each city promoting a different day of the week. The sales data

is collected and provided to a team for analysis. What concern might the analytics team have regarding data

quality across cities?

A Data Dictionary is being developed for an employee database. When reviewing the data dictionary, the analyst recommends adding another primitive data element. Which element would be suggested? 

A pharmaceutical company is conducting research to determine whether a new medicine in development is more successful in reducing the pain associated with rheumatoid arthritis then their current drug in the market. A group of volunteers are selected for the research. One set of participants is provided the existing drug while a second set of participants is given the new drug.Which technique is being applied?

A new dataset describing employee salaries is received by a company. A colleague wonders whether a variable follows a Gaussian distribution. Which of the following plots would demonstrate this?