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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?

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Checkpoint description

Describe what's changed since the last checkpoint.

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Chris Graham 2 years, 4 months ago

Gave some feedback: Ready to use

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Chris Graham 2 years, 4 months ago

Good question. I've made some minor changes to the advice. 

Stanislav Duris 2 years, 4 months ago

Published this.

Stanislav Duris 2 years, 4 months ago

Saved a checkpoint:

As I said in one of our meetings, my main goal in creating this question was to show students that two equal means don't mean two equal distributions and to play around with the fact that all measures of average can be misleading when interpreted incorrectly. I started another question as advised by Chris, Christian and Lauren about salaries (many poor people vs few very rich residents leads to false beliefs about average salary in the area) but I don't think I'll manage to get it done up to a point where someone else can finish it, so I think someone else just needs to start that question from the scratch. A histogram could be included in the Salaries question. I tried to play around with Geogebra so I could include graphs in my future questions, but I did not have time to finish this successfully, so someone else may need to do this to cover the GCSE statistics.

Restore this checkpoint

Stanislav Duris 2 years, 4 months ago

Gave some feedback: Needs to be tested

Elliott Fletcher 2 years, 4 months ago

Gave some feedback: Has some problems

Elliott Fletcher 2 years, 4 months ago

This is a very good question, there isn't really much i would change just a few minor things.

Advice

a) You don't need the "first" in the first sentence here as there is only one column for Sweet Heaven.

When you say "Similarly for Tasty Hell:" i think the colon should just be a comma but i'm not 100% sure.

b) You could maybe split up this paragraph by starting a new line after each sentence, but it's up to you. 

Stanislav Duris 2 years, 4 months ago

Thank you Chris, I have used [3pt].

Stanislav Duris 2 years, 4 months ago

Gave some feedback: Needs to be tested

Picture of Chris Graham

Chris Graham 2 years, 4 months ago

Good question. Just a couple of things:

In the statement you say that the shops will be referred to as $s$ and $t$, but this notation is not used in the question itself, just the advice, so why not introduce this shorthand at the start of the advice instead.

In your advice, you have several calculations involving fractions inside the align environment. This is fine, however you will notice that they appear quite squashed with the default line spacing. You could add [1pt] (play around with the number) immediately after the line-break (the \\) to add additional line spacing, e.g.

\overline{s} &= \frac{\sum s}{n} \\[2pt]
...

Picture of Chris Graham

Chris Graham 2 years, 4 months ago

Gave some feedback: Has some problems

Stanislav Duris 2 years, 4 months ago

Gave some feedback: Needs to be tested

Stanislav Duris 2 years, 4 months ago

Gave some feedback: Has some problems

Stanislav Duris 2 years, 4 months ago

Gave some feedback: Needs to be tested

Stanislav Duris 2 years, 4 months ago

Created this.
Name Status Author Last Modified
Weight of a scoop in two ice cream parlours Ready to use Stanislav Duris 01/08/2017 14:28
Measures of central tendency-Q3 draft Lauren Frances Desoysa 08/08/2018 13:08
Measures of central tendency from a list 2 Needs to be tested Lauren Frances Desoysa 06/11/2018 15:18
Harry's copy of Weight of a scoop in two ice cream parlours draft Harry Flynn 18/11/2018 11:50
Michael's copy of Weight of a scoop in two ice cream parlours draft Michael Proudman 19/11/2018 12:02

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This question is used in the following exams: