Business Analytics Lecture 5 Revision

Which of the following is NOT a measure of position?

• Median

• Range

• Mean

• Mode

__ is obtained by separating the population into mutually exclusive sets, and then drawing simple random samples from each set.

• Stratified Random Sampling

• Synchronous Sampling

• Simple Random Sampling

• Systematic Random Sampling

When a product launches a new version, some people may welcome changes, and a new feature attracts them to use the product more. What is that effect?

• Counterfactual Effect

• Primacy Effect

• Quasi-Effect

• Novelty Effect

__ are data lists with multidimensions (usually three or more dimensions) stored as a table.

• Data Mart

• Data Warehouse

• Data Lake

• Data Cube

Which of the following is NOT a 3(V) of BigData?

• Vivid

• Variety

• Velocity

• Volume

_ involves examining historical data to get a sense of how a business department, team or staff member performed over a particular time.

• Predictive Analytics

• Business Intelligence

• Prescriptive Analytics

• Sentiment Analysis

JSON stands for:

• Java System Oriented Number

• Java Systematic Order Number

• JavaScript Object Notation

• JavaScript Object Nomenclature

__ Decision Tree is where target variable can take up continuous values.

• Classification Tree

• Regression Tree

• Both of the above

• None of the above

__ looks at the way that data fits into an organization’s larger operations – including aspects that aren’t necessarily captured by large sets of data, such as organizational structure or workflow protocols.

• Data Scientist

• Business Analyst

• Data Engineer

• Marketing Specialist

Which of the following is a DML command is SQL?

• Create

• Drop

• Grant

• Insert