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Try to answer the following questions here:

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Checkpoint description

Describe what's changed since the last checkpoint.

Elliott Fletcher 2 years, 1 month ago

Published this.
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Christian Lawson-Perfect 2 years, 2 months ago

Gave some feedback: Ready to use

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Christian Lawson-Perfect 2 years, 2 months ago

Saved a checkpoint:

Looks good!

The part that asks for a fraction also accepts a decimal, but that's a Numbas problem. I've got a long-standing issue on GitHub about acceptable answer formats: https://github.com/numbas/Numbas/issues/380 (this is for my reference only!)

Restore this checkpoint

Elliott Fletcher 2 years, 2 months ago

Gave some feedback: Needs to be tested

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Chris Graham 2 years, 2 months ago

Gave some feedback: Has some problems

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Chris Graham 2 years, 2 months ago

In the advice, it is not conventional that a comma is placed at the end of the line within a derivation or calculation, as you have with something like

\[\begin{align} x &= \frac{1}{10}\text{,} \\ &= 10\%\text{.} \end{align}\]

An appropriate place to have a comma at the end of a line within the align environment is where you have something more like a list:

\[\begin{align} x_1 &= 2\text{,} \\ x_2 &=4\text{.} \end{align}\]

Sorry, this is probably me brainwashing you about punctuation!

Also, your statement is unrelated to the question content, which is really about conversion. You can keep it in, but should expand on it. 

Elliott Fletcher 2 years, 2 months ago

Gave some feedback: Needs to be tested

Vicky Hall 2 years, 2 months ago

Gave some feedback: Has some problems

Vicky Hall 2 years, 2 months ago

In part a)i), you need to untick the box in the marking section that says 'require trailing zeroes'. I just entered $0.4$ instead of $0.40$ and it marked it wrong. I would put a full stop at the end of all sentences such as 'Convert this probability to a decimal'.

Elliott Fletcher 2 years, 2 months ago

Gave some feedback: Needs to be tested

Lauren Richards 2 years, 2 months ago

Gave some feedback: Has some problems

Lauren Richards 2 years, 2 months ago

  • You don't need either of the commas in the second sentence of the statement. 
  • The question statement of part a) sounds like it should be the first sentence in the advice. It should just be "The probability that it will rain today is 90%."
  • i) and ii) should be i) and ii) in italics in both the questions and the advice. 
  • I think that the bracket after P in both i) and ii) should just say (rain) rather than (it rains today).
  • Again in part b), I think it should say "The probability that the bus is late today is 0.7." rather than "You are told that the probability that your bus is late today is 0.7."
  • Again in part b), I think the bracket should just say (late) rather than (Your bus is late). Also pointing out that you capitalised this bracket but didn't in part a). I don't know which one is right but you should probably keep it consistent. 
  • Again in part c), I think it should say "The probability that a football match between Newcastle and Manchester ends in a draw is 1/7." Also, I think you should add United after Newcastle and United/City after Manchester (but preferably United haha) just so the context seems more realistic. 
  • I would not use "just" anywhere in the advice. It is almost the same as saying "simply" which Christian hates and is a little belittling to someone who is actually finding this difficult. 
  • I like all the contexts and how you switch the questions around so the user has to be able to convert to all three things! :) 

Elliott Fletcher 2 years, 2 months ago

I was going to try and use a few less questions, but i wanted to make sure all directions of conversions were covered. (e.g fractions - decimals and decimals - fractions).

Elliott Fletcher 2 years, 2 months ago

Gave some feedback: Needs to be tested

Elliott Fletcher 2 years, 2 months ago

Created this.
Name Status Author Last Modified
Probability - Notation and Conversion between Percentages, Decimals and Fractions Ready to use Elliott Fletcher 01/08/2017 14:27
Maria's copy of Probability - Notation and Conversion between Percentages, Decimals and Fractions draft Maria Aneiros 11/06/2019 06:36
Probability - Notation and Conversion between Percentages, Decimals and Fractions draft Xiaodan Leng 11/07/2019 01:43

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This question is used in the following exams: