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7 of 8 handed in
9.1 / 15
Class average
3
Under 50% of the marks
Q3
Weakest question · 1.4/3 average
Green 80%+ · amber 50 to 79% · red under 50% · – not started. Tap a Q1 mark to check or change it.
| Student | Total | Q1 · 2 marks | Q2 · 4 marks | Q3 · 3 marks | Q4 · 6 marks |
|---|---|---|---|---|---|
| Class average | 1.4/2 | 2.9/4 | 1.4/3 | 3.4/6 | |
| Amira K. | 14/15 | 4/4 | 3/3 | 5/6 | |
| Ben O. | 9/15 | 3/4 | 1/3 | 3/6 | |
| Chloe L. | 13/15 | 4/4 | 2/3 | 6/6 | |
| Lewis T. | 6/15 | 2/4 | 1/3 | 2/6 | |
| Maya P. | 3/15 | 1/4 | 1/3 | 1/6 | |
| Priya S. | 12/15 | 4/4 | 2/3 | 4/6 | |
| Sam W. | 7/15 | 2/4 | 0/3 | 3/6 | |
| Tom H.not started | – | – | – | – | – |
Class average
Full · part · zero marks. The reason is the marker's most repeated comment on answers that lost marks.
Q3
1.4 / 3 avg
1 full · 5 part · 1 zero
Most common: Doesn't say what the bits represent. (6 of 7)
Q4
3.4 / 6 avg
1 full · 6 part · 0 zero
Most common: Total is not set to 0 before the loop. (6 of 7)
Q1
1.4 / 2 avg
4 full · 2 part · 1 zero
Most common: Only one difference given. (3 of 7)
Q2
2.9 / 4 avg
3 full · 4 part · 0 zero
Most common: The loop doesn't stop at the last item. (4 of 7)
Class
Question · 2 marks
State two differences between RAM and ROM.
Names, scores and answers on this page are fictional examples.
Student answer
“RAM loses its data when the power is off and can be changed. ROM keeps its data and stores instructions.”
AI suggested mark · sample
2 / 2
Identifies both the temporary nature of RAM and the permanent nature of ROM.
Buttons only change this sample on your screen. No student record or mark is written.
Teacher preview · IGCSE Computer Science
Compare three sample answers to the same exam question. See the class overview and tailored next steps.
Same question, three answers
Describe what is meant by sample resolution.
Source: Cambridge IGCSE Computer Science 0478/12, Oct/Nov 2023, Question 5 part c. Marking points follow the published Cambridge mark scheme for that question (© UCLES 2023).
Answer written by ReviseWell
Sample resolution is the number of bits used to represent each sound sample. Using more bits allows a wider range of amplitude values to be stored for each sample.
Example marking
2 / 2
You earned both marks: you explain the bits used per sample and how they represent different amplitude values. Clear and accurate.
These answers and their marking were written by ReviseWell to show the format. They are not student work or live marker output. The marking points follow the published mark scheme for the source question.
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