Year 9 – Data Science

Which of the following is the most accurate definition of data science?

• Data science is extracting meaning from large data sets in order to provide insights to support decision-making
• Data science is using computers to analyse data and to perform calculations on the data to produce information
• Data science is performing experiments and recording the data produced by those experiments
• Data science is writing code to make sure that any inaccuracies in data sets are spotted and removed (cleaned)

Which of the following best describes a data visualisation?

• A. Presenting related data so that a user can see individual items of data
• B. Making sure that data is accessible and that no data is hidden
• C. A visual representation that communicates relationships among the data
• D. A collection of graphs that tell a story when put together

Is this a visualisation or an infographic?

• Visualisation
• Infographic

What is meant by a correlation?

• A. The relationship between two or more variables
• B. When there is an upward trend in a graph
• C. When there is a set of data that doesn’t lie in the normal or expected range
• D. When data is placed in a graph

5. The visualisation plots life expectancy (y-axis) against time (x-axis). What type of correlation does this visualisation show from 1949 onwards?

• A. Positive
• B. Negative
• C. Neutral
• D. No correlation is visible

The following graph shows the annual average temperatures recorded by a weather station over a period of 20 years. Identify the outlier in the data

• A. Point A
• B. Point B
• C. Point C
• D. Point D

Which of the following is the correct order of the investigative cycle?

• A. Problem, data, plan, analysis, conclusion
• B. Conclusion, plan, problem, data, Analysis
• C. Plan, problem, analysis, data, conclusion
• D. Problem, plan, data, analysis, conclusion

In which step of the cycle would you work out where the data will come from or how you will collect it?

• A. Data
• B. Analysis
• C. Plan
• D. Problem

In which step of the cycle would you pose the question(s) that you will use data to help you answer?

• Data
• Analysis
• Plan
• Problem

In which step of the cycle would you cleanse the data?

• Data
• Analysis
• Plan
• Problem