Handling Data 7
2 marks · EasyA coin is tossed twice. Calculate the probability that both tosses show heads. Give your answer as a decimal.
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0.25 (±0.01)
Also accept: 1/4; 0.25
Common mistakes: 0.5; 0.5×2
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Marking points
M1 · 1 mark · Identifies that P(head and head) = P(head) × P(head)
A1 · 1 mark · Gets correct answer 0.25 (or 1/4)
Worked solution