10 CT Analysing Data Wk5 PreQuiz

Which early analytical method laid the groundwork for modern descriptive analytics by summarising census data in tabular form?

• Neural networks

• Regression trees

• Frequency tables

• Reinforcement learning

What was the primary driver behind the shift from batch-processed data warehouses to real-time stream processing architectures?

• Cheaper fibre-optic cables

• Demand for instantaneous insights in areas like fraud detection

• Wider adoption of floppy disks

• The Y2K bug remediation

The rise of “self-service BI” tools (e.g., PowerBI, Tableau) best illustrates which aspect of data-analysis evolution?

• Outsourcing analytics to specialist vendors

• Democratization of data insights for non-technical staff

• Return to manual spreadsheet analysis

• Elimination of visual dashboards

Which technology most directly enabled the leap from terabyte-scale to petabyte-scale analytics?

• Bubble memory

• Distributed file systems like Hadoop HDFS

• CRT monitors

• Dot-matrix printers

Predictive maintenance in modern aviation engines relies heavily on which recent analytical advancement?

• Static heat-maps

• Prescriptive analytics using digital twins

• Hand-drawn Pareto charts

• ASCII art visualisations

When designing a colour palette for a dashboard, which principle best supports accessibility?

• Maximising neon saturation for emphasis

• Using red-green contrasts exclusively

• Selecting colour-blind-safe combinations

• Animating background gradients

Which of the following is NOT a recognised risk related to “data trails”?

• Unintentional re-identification of anonymised individuals

• Version control conflicts in Git repositories

• Continuous location tracking via smartphones

• Profiling based on clickstream logs

Chartjunk refers to design elements that:

• Clarify complex trends with extra icons

• Improve memorability by adding 3-D effects

• Distract viewers without adding informational value

• Optimise the data-ink ratio

Under the concept of data ownership, an Australian citizen’s My Health Record is primarily owned by:

• Their internet service provider

• The Australian Government, with individual access rights

• The nearest public hospital exclusively

• Any third-party app that pulls the record

Which visualisation choice best reveals correlation strength between two continuous variables?

• Stacked area chart

• Pie chart

• Scatter plot with trend line

• Word cloud