2022HSCShort answer

Q24 (a)

3 marks

Question

Birth defects in humans can be caused by chromosomal abnormalities.

Maternal age (years)	Prevalence of chromosomal abnormalities (per 1000 births)
20	1.5
30	3
35	8
40	22
45	38

Draw a suitable graph of the data provided in the table. Include a suitable line of best fit.

Try the question before revealing the answer.

Solution

Criteria	Marks
Provides a suitable graph; provides a graph that is correctly drawn including labels and scale for axes, points plotted correctly, appropriate line of best fit	3
Provides a graph that includes most aspects correctly	2
Provides suitable aspects of a graph	1

Sample answer:

[unclear in source]

Supplied marking guidance · human reviewed

Compare this with your working, not only your final sentence.

Syllabus alignment

Module 8 · Non-infectious Disease and Disorders

Causes and EffectsRepresent incidence, prevalence and mortality data for non-infectious diseases.

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