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Date May 2022 Marks available 3 Reference code 22M.1.SL.TZ0.2
Level SL Paper 1 Time zone no time zone
Command term Identify Question number 2 Adapted from N/A

Question

Investigation of ocean disasters

A system called the Marine Accident Data Analysis Suite (MADAS) uses data collected from marine accidents to create models that are used as part of a simulation1 to help understand what has happened (see Figure 2).

Figure 2: An example of a MADAS model


Cruise ships are required to carry a voyage data recorder (VDR), which uses sensors to monitor the conditions in the ship at all times. The data from the sensors is collected and input into a relational database2 (see Figure 3) that is a part of the MADAS system (see Figure 4).

Figure 3: Part of the relational database in the MADAS system


Figure 4: The MADAS system

 


1 simulation: a computer simulation is the usage of a computer for the modelling of a real-world process or system

2 relational database: a database that consists of one or more tables where there are pre-defined relationships between the data elements


[Figure 2: With permission from the International Union of Marine Insurance. Source adapted.]

The voyage data recorder (VDR) gathers information during a voyage.

Identify three sensors that may be used to detect data about the weather conditions.

[3]
a.i.

Identify three advantages of using a relational database rather than a flat-file database.

[3]
a.ii.

There are concerns about the reliability of the data being input into the MADAS system.

Explain why data validation and data verification are used to ensure the reliability of the data being input into the MADAS system.

[3]
b.i.

The MADAS system uses data visualization.

Explain why data visualization is used by the MADAS system.

[3]
b.ii.

To what extent can the use of models and simulations like the MADAS system help prevent future accidents?

[8]
c.

Markscheme

Answers may include:

 

Award [1] for identifying each sensor that may be used to detect data about weather conditions up to a maximum of [3].

a.i.

Answers may include:

 

Award [1] for identifying each advantage of a relational database rather than using a flat-file database up to [3].

a.ii.

Answers may include:

 

Award [1] for a definition of data validation.

Award [1] for a definition of data verification.

Award [1] for a statement that explains why both validation and verification is necessary.

b.i.

Answers may include:

 

Award [1] for identifying a reason why data visualization is used by the MADAS system and [1] for each subsequent development of that reason up to [3].

b.ii.

Answers may include:

Advantages:


Disadvantages:

 

In part (c) of this question it is expected there will be a balance between the terminology related to digital systems and the terminology related to social and ethical impacts.

Keywords: transport, infrastructure, data, algorithm, accuracy, reliability, model, modelling, trainingenvironment, systems, ethics, values


Refer to SL/HL paper 1, part c markbands when awarding marks. These can be found under the "Your tests" tab > supplemental materials > Digital society markbands and guidance document
.

c.

Examiners report

[N/A]
a.i.
[N/A]
a.ii.
[N/A]
b.i.
[N/A]
b.ii.
[N/A]
c.

Syllabus sections

Topic 3: Content » 3.1 Data
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