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Narnia Bar Charts LO: to solve a problem by organising and interpreting data in bar charts.

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**What do we know about bar charts already?**

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**We know a bar chart should:**

* have a title. * have numbered and labelled axis. * have clear bars showing how much of something has been observed/recorded. * be numbered with sensible intervals. * answer questions about the data.

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**A bar chart always has a title.**

It might also have a ‘legend’. A bar chart always has a title. Vertical axis (y). Always labelled and numbered. This shows what the colour of each bar represents. The height of the bars show how many of something was scored/recorded. Horizontal axis (x). Always labelled.

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**How can we collect the information we need to construct a bar chart?**

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Make a frequency chart!

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A frequency chart is similar to a tally chart…except you just write the number instead of recording by tally!

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**Like this… Aslan Peter Lucy Susan Edmund Mr Tumnus White Witch**

Favourite Character Frequency Aslan Peter Lucy Susan Edmund Mr Tumnus White Witch Mr Beaver Insert any other characters here

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Your Quest Tables 1 and 2: What are the favourite Narnia characters in Year 3? * Use the given frequency chart and record the favourite Narnia characters in Year 3. * Create a bar chart showing the information you have collected.

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Your Quest Tables 3 and 4: Which creatures appear most frequently in the final battle scene? * Use the given frequency information and chart and record how many times the creatures appear. * Create a bar chart showing the information you have collected.

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Minoboars Lions Centaurs Witches Giants Mr Tumnus Satyrs Goblins Unicorns

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**Creatures Frequency Minoboars Lions Witches Goblins Satyrs Centaurs**

Mr Tumnus Giants Unicorns Minoboars

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Your Quest Table 5: What are the favourite Narnia characters in Year 3? * Create a frequency chart to find out the favourite Narnia characters in the class. * Survey the class. * Create a bar chart, with a legend, showing the information you have collected. * Write some other questions your bar chart could answer.

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**A Tabitha Mellor production**

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Copyright © 2010 Pearson Education, Inc. Chapter 4 Displaying and Summarizing Quantitative Data.

Copyright © 2010 Pearson Education, Inc. Chapter 4 Displaying and Summarizing Quantitative Data.

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