Choc Bar Bar Chart

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Bar chart showing the number of bars of chocolate sold.

What is the total number of chocolate bars sold during the week?

What is the mean number of sales per day?

What is the modal frequency?

What is the median number of sales per day?

What is the range of sales?

Sketch a similar bar chart showing Tuesday as the best sales day and the mean and range both 4.

A Mathematics Lesson Starter Of The Day

Topics: Starter | Averages | Graphs | Statistics

  • Mr Gray, Oldmachar
  • Would have been a good activity but we couldn't get the whole graph displayed on the screen/white board
  • Transum,
  • Thanks for your feedback Mr Gray. The graph is designed to be as big as possible while still fitting on an 800x600 resolution screen. Use the browser controls to zoom out then press the F11 key to hide the toolbars.
  • Karen, Folkestone
  • Have used and is a good starter, however blue does not display well in my classroom - any chance of option to change colour?
  • Mr Jackson, Saint Bedes Redhill
  • My year 7's really enjoyed this starter it made them think, thank you.
  • Jordan, Year 6 Charnwood Primary School, Lichfield
  • This was really good. Most people remembered mode, mean and range.
  • Gillian Miskell, Picton, NZ
  • I would love to see something like this but with dot plots, as we use those extensively to lead on to box and whisker.

    [Transum: Thanks for your feedback Gillian. I am not sure that I can help with the dot plots but don't miss the exercises called Box Plots]
  • Kelly, North Carolina
  • The graph should be able to be moved on a touch screen.

How did you use this starter? Can you suggest how teachers could present or develop this resource? Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for Maths teachers anywhere in the world.
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Laptops In Lessons

Teacher, do your students have access to computers such as tablets, iPads or Laptops?  This page was really designed for projection on a whiteboard but if you really want the students to have access to it here is a concise URL for a version of this page without the comments:

However it would be better to assign one of the student interactive activities below.

Laptops In Lessons

Here is the URL which will take them to a related student activity.

Student Activity


Curriculum Reference

See the National Curriculum page for links to related online activities and resources.


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