Computer Science · Oct / Nov 2023 · Paper 22 · Question 6
0478
As printed in the paper
The question as text
The flowchart represents an algorithm that performs a process on groups of values that are input. The algorithm will fail if the first value of any group is 0. An input of –1 will terminate the algorithm. START STOP Total 0 Count 0 INPUT Value IS Value = 0 ? IS Value = –1 ? No No Yes Yes Total Total + Value Count Count + 1 Average Total / Count OUTPUT "Total is ", Total OUTPUT "Average is ", Average
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6(a)[5]
One mark per correct column, max five
Value
Average
Total
Count
OUTPUT 0
0
25
25
1
35
60
2
3
63
3
0
21
Total is 63 Average is 21 0
0
57
57
1
20
77
2
25
102
3
18
120
4
0
30
Total is 120 Average is 30 0
0
−1
6(b)[2]
One mark per mark point, max two
MP1
to add together / find the average of a batch of numbers
MP2
the total and average are output (when the batch is complete/when 0 is entered)
MP3
when 0 is entered a new batch is started.
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