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      Checking understanding composite and bar-line charts

      Lesson details

      Learning outcome

      I can construct/interpret composite bar charts and bar-line charts.

      Key learning points

      1. Certain data is suitable for a composite bar chart or bar-line chart.
      2. The shape of the graph can be estimated from the data.
      3. For larger data sets, technology can make constructing graphs quicker.

      Keywords

      • Bar chart - A bar chart (bar graph) is a graph consisting of bars visually representing the frequency of objects or groups.

      Common misconception

      Pupils may read the frequency or % proportion value off of the y-axis for each group on a composite bar chart.

      Remind pupils that another name for composite bar charts is a stacked bar chart and the frequency needs to be calculated.

      Teacher tip

      If you have access to coloured mulitlink cubes, pupils can construct a composite bar chart by stacking the cubes for data they collect. You can then ask them to convert it into a comparison bar chart.

      Licence

      This content is © Oak National Academy Limited (2025), licensed on Open Government Licence version 3.0
      except where otherwise stated. See Oak's terms & conditions
      (Collection 2).

      Lesson video

      Loading...

      Prior knowledge starter quiz

      6 Questions

      Q1.
      True or false? Pictograms can use any icon.

      True. Any icon can be used to represent a given value.
      True. The icons are sized differently to represent different values.
      False. Icons should never be used.
      Correct answer: False. Icons should be simple and representative.

      Q2.
      Bar charts should have gaps when displaying __________ or __________ data.

      Correct answer: discrete
      continuous
      Correct answer: qualitative

      Q3.
      Each icon is worth 6 tonnes of recycling. The pictogram shows that tonnes of plastic were recycled.

      An image in a quiz
      Correct Answer: 9, nine

      Q4.
      A vet records the number of each type of pet that they saw in one week in their surgery. The bar chart shows their results. What percentage of the pets seen were fish?

      An image in a quiz
      7.0
      Correct answer: 9.9
      16.9
      18.3

      Q5.
      The pictogram shows the number of apples picked in an orchard over a three week period. Which of the following statements are correct?

      An image in a quiz
      Correct answer: The fewest apples were picked in week 2.
      Correct answer: Under half of the apples picked over the 3 weeks were picked in week 1.
      A total of 14 apples were picked in the three week period.
      Correct answer: 10 fewer apples were picked in week 2 than week 3.
      20 fewer apples were picked in week 1 than in week 3.

      Q6.
      Which of the following statements are correct about the data represented on this bar chart?

      An image in a quiz
      Correct answer: Box D had the least number of items.
      Box D had half as many items as box B.
      Correct answer: Box B had 4 more items than box D.
      There were 171 items across the four boxes.

      6 Questions

      Q1.
      Select the charts which are examples of bar or bar-line charts.

      Correct Answer: An image in a quiz
      An image in a quiz
      Correct Answer: An image in a quiz
      An image in a quiz
      Correct Answer: An image in a quiz
      An image in a quiz

      Q2.
      What is the most popular genre of book?

      An image in a quiz
      Detective
      Sci-fi
      Correct answer: Romance
      Correct answer: Horror

      Q3.
      This composite bar chart shows the ice-cream sales for two different parlours. How many vanilla flavoured (V) ice creams were sold in parlour 1?

      An image in a quiz
      15
      20
      Correct answer: 24
      36

      Q4.
      This composite bar chart shows the ice-cream sales for two different parlours. How many strawberry flavoured (S) ice creams were sold in parlour 2?

      An image in a quiz
      16
      18
      22
      Correct answer: 30

      Q5.
      This composite bar chart shows the ice-cream sales for two different parlours. What was the total number of chocolate flavoured (C) ice creams sold across both parlours?

      An image in a quiz
      45
      15
      36
      Correct answer: 33

      Q6.
      This composite bar chart shows the ice-cream sales for two different parlours. What is the difference in mint flavoured (M) ice cream sales between the two parlours?

      An image in a quiz
      2
      3
      Correct answer: 4
      6

      To help you plan your 10 maths lesson on: Checking understanding composite and bar-line charts, download all teaching resources for free and adapt to suit your pupils' needs...