Starter quiz
Rectangle ______ is the longest.- 'B' ✓
These tally marks show a value of ______.- '6' ✓
- Which of these numbers are multiples of 15?
- 30 ✓
- 75 ✓
- 95
- 130
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- A pictogram (pictograph) is a graph consisting of pictures to visually represent the ______ of objects or groups.
- 'frequency' ✓
- Select the frequency table that has a total frequency of 46.
- Some things are measured and some are counted. Which of these are counted?
- heights of a group of people
- number of cars that drive past ✓
- photographs with an elephant on them ✓
- weights of some pet dogs
- number of odd socks ✓
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Exit quiz
The total frequency for this data set is ______.- '16' ✓
- If a bar chart was to be constructed for data about favourite pizza toppings in a class, the bars would have a specific order. True or false?
- True - order from the most favourite to the least favourite topping
- False - there is no relevant order to pizza toppings so they can be in any order ✓
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This is an example of a __________ bar chart.- standard
- comparison ✓
- stacked
-
- The frequency axis needs to have a suitable scale for the data it is presenting. The scale will go up in ______ increments.
- 'equal' ✓
Three pupils are discussing this bar chart. Who is correct with their observation?
Which bar chart matches this data?
Worksheet
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Presentation
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Video
Lesson Details
Key learning points
- Data presented as a list can be represented as a bar chart
- Data presented in a table can be represented as a bar chart
- The type of data determines how the bars should be drawn
Common misconception
Pupils may label the vertical axis with the frequency values rather than a scale.
Remind the pupils that the scale should go up in the same jumps. i.e. 0, 5, 10, 15 etc and have them check theirs.
Keywords
Frequency - The frequency is the number of times an event occurs; or the number of individuals (people, animals etc.) with some specific property.
Bar chart - A bar chart (bar graph) is a graph consisting of bars visually representing the frequency of objects or groups.
Data - Data are a collection of information.
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