Try to answer the following questions here:

• What is this question used for?
• What does this question assess?
• What does the student have to do?
• How is the question randomised?
• Are there any implementation details that editors should be aware of?

Statistics

### History

#### Checkpoint description

Describe what's changed since the last checkpoint.

#### Xiaodan Leng1 year, 6 months ago

Created this as a copy of Choose the probability of getting certain scores on a die.
Basic Probability Questions Should not be used Elliott Fletcher 20/11/2019 14:33
Choose the probability of getting certain scores on a die Ready to use Christian Lawson-Perfect 20/11/2019 14:34
Probability of flipping a coin and getting a tails Ready to use Christian Lawson-Perfect 20/11/2019 14:41
Probability of picking a particular colour ball from a bag Ready to use Christian Lawson-Perfect 20/11/2019 14:41
Maria's copy of Choose the probability of getting certain scores on a die draft Maria Aneiros 27/05/2019 02:29
Maria's copy of Probability of picking a particular colour ball from a bag draft Maria Aneiros 27/05/2019 02:32
Choose the probability of getting certain scores on a die draft Xiaodan Leng 11/07/2019 01:57
Probability of flipping a coin and getting a tails draft Xiaodan Leng 11/07/2019 01:58
Probability of picking a particular colour ball from a bag draft Xiaodan Leng 11/07/2019 01:58
boying's copy of Probability of picking a particular colour ball from a bag draft boying xu 07/02/2020 17:37
boying's copy of Probability of picking a particular colour ball from a bag draft boying xu 07/02/2020 17:38
Chris's copy of Probability of picking a particular colour ball from a bag draft Chris Graham 14/02/2020 12:54
Kinga's copy of Probability of picking a particular colour ball from a bag draft Kinga Zaczek 08/09/2020 18:42

Give any introductory information the student needs.

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#### Warning

• When applying the function,
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• Change the signature of parameter from to .

This variable is an HTML node. HTML nodes can not be relied upon to work correctly when resuming a session - for example, attached event callbacks will be lost, and mathematical notation will likely also break.

If this causes problems, try to create HTML nodes where you use them in content areas, instead of storing them in variables.

Describe what this variable represents, and list any assumptions made about its value.

← Depends on:
→ Used by:

This variable doesn't seem to be used anywhere.

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#### Error in variable testing condition

There's an error in the condition you specified in the Variable testing tab. Variable values can't be generated until it's fixed.

Error:

for seconds

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### Penalties

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Select a part to edit.

The correct answer is an equation. Use the accuracy tab to generate variable values satisfying this equation so it can be marked accurately.

#### Checking accuracy

Define the range of points over which the student's answer will be compared with the correct answer, and the method used to compare them.

#### Variable value generators

Give expressions which produce values for each of the variables in the expected answer. Leave blank to pick a random value from the range defined above, following the inferred type of the variable.

#### String restrictions

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#### Test that the marking algorithm works

Check that the marking algorithm works with different sets of variables and student answers using the interface below.

Create unit tests to save expected results and to document how the algorithm should work.

There's an error which means the marking algorithm can't run:

#### Question variables

These variables are available within the marking algorithm.

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#### Marking parameters

These values are available as extra variables in the marking algorithm.

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#### Part settings

These values are available as entries in the settings variable.

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Alternative used:

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#### Unit tests

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The following tests check that the question is behaving as desired.

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 This note produces the expected output

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When you need to change the way this part works beyond the available options, you can write JavaScript code to be executed at the times described below.

Run this script the built-in script.

This script runs after the built-in script.

To account for errors made by the student in earlier calculations, replace question variables with answers to earlier parts.

In order to create a variable replacement, you must define at least one variable and one other part.

The variable replacements you've chosen will cause the following variables to be regenerated each time the student submits an answer to this part:

These variables have some random elements, which means they're not guaranteed to have the same value each time the student submits an answer. You should define new variables to store the random elements, so that they remain the same each time this part is marked.

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Define the list of parts that the student can visit after this one.

• #### Variable replacements

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### Previous parts

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### Parts

#### Steps

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