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An interactive experiment about probability: the student must first 'design' the experiment by deciding how many times they're going to flip a coin, and define what number of heads would make them believe the coin is biased. They must then enter the results of their coin flips, calculate the percentage of heads, and finally decide if the coin is biased, using the condition they specified in the design stage. There are optional hints at each stage.
Metadata
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England schools
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England university
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Scotland schools
Taxonomy: mathcentre
Taxonomy: Kind of activity
Taxonomy: Context
Feedback
From users who are members of Demos :
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said | Ready to use | 4 years, 7 months ago |
History
Christian Lawson-Perfect 4 years, 7 months ago
Gave some feedback: Ready to use
Christian Lawson-Perfect 4 years, 7 months ago
Published this.Christian Lawson-Perfect 4 years, 7 months ago
Created this as a copy of Decide if a coin is biased.Name | Status | Author | Last Modified | |
---|---|---|---|---|
Decide if a coin is biased | Ready to use | Christian Lawson-Perfect | 13/06/2020 14:11 | |
Martin's copy of Decide if a coin is biased | draft | Martin Jones | 31/03/2022 09:01 | |
Numbas demo: explore mode | Ready to use | Christian Lawson-Perfect | 12/09/2023 10:39 |
There are 10 other versions that do you not have access to.
Name | Type | Generated Value |
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num_flips | integer |
100
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raw_critical_number | integer |
60
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critical_number | integer |
60
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flips_string | string |
t t t t h t h h h t h h t h h
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flips | list |
List of 100 items
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num_heads | number |
51
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num_tails | number |
49
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percent_heads | number |
51
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cleaned_flips_string | string |
T T T T H T H H H T H H T H H
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is_biased | boolean |
false
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critical_likelihood | rational |
3/5
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Generated value: integer
100
→ Used by:
- critical_likelihood
- critical_number
- flips_string
This variable doesn't seem to be used anywhere.
Parts
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Introduction
Information only
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Decide number of flips
Number entry
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Define 'biased'
Number entry
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What do you expect an unbiased coin do?
Number entry
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Enter data
Match text pattern
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Calculate proportion of heads
Number entry
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Show frequencies of heads and tails
Information only
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Is the coin biased?
Yes/no
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Calculate the critical likelihood
Number entry
Use this tab to check that this question works as expected.
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Match text pattern | ||
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Yes/no | ||
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