Week 8 B Lesson 1: Drawing tables and charts

Week 8: Drawing tables and charts

Fill in the Blank

What number is represented ?

Fill in the Blank

What number is represented?

Fill in the Blank

What number is represented?

Fill in the Blank

What number is represented?

Multiple Choice

In the tally table question below, which is the correct way to start?

Why is this incorrect?

• Looking for all "dogs" first then looking for all "cats" second....etc

• That means you will be looking through all the information 7 times! Its easy to make mistakes that way.

Why is this incorrect?

• Writing the next number every time you meet that type.

• It is very likely that you will run out of room... and when you write numbers closer together its easy to get confused

Why is this CORRECT?

• Working through the data once and marking each one off as you go.

• Its easy to keep track of where you are up to and you are less likely to make mistakes

Here is the original question

Can you copy and complete the table accurately?

Multiple Choice

Which is the correctly completed frequency table?

Constructing a Bar Chart

• Demonstrates the frequency for each category.

• Each bar should be an equal width and have equal spaces between.

Error 1: Title

The title is incomplete and doesn't really tell us what the chart shows.

Error 2: Axis

• The axis should always be numbered evenly.

• This chart has missed the 5 .

Error 3: Axis Label

• This needs to clearly tell people how many.

• As a minimum you can call this "frequency".

Error 4: Axis

• The base line has not been numbered.

• You should label 0 - don't just assume people know it.

Error 5: Bar Width

• Check each bar has the same width.

• 
  

Error 6: Spellings

• Edward is spelled incorrectly.

• Spelling is important - especially when the name is already on the page for you!

Error 7: Between Bars

• Just like each bar should have an equal width, all bars should be evenly spaced.

• 
  

Error 8: Frequencies

• Check that the height of the bar matches the information in the frequency table.

Constructing a Pictogram

A Pictogram demonstrates frequency using icons.

This type of chart has some limitations because if the frequency is a huge number (like 50) this would be terrible to draw and count!

Constructing a Pictogram

A pictogram icon doesn't have to represent one item.

You need to use a key to demonstrate how you have used each picture.

What does half a cupcake mean?

ANSWERS

• 12 students had a sandwich. (because each icon means 3)

• If each picture means 3 - what does half a picture mean? (we can't have 1.5 people!)

• Our choice of icon needs to be something that can be shared equally into parts!

Multiple Choice

Hover over the picture to enlarge it.

• 2

• 5

• 2.5

• 4

Multiple Choice

Hover over the image to enlarge it.

• 14

• 16

• 28

• 7

Multiple Choice

Hover over the image to enlarge it.

• Maths 4

  English 14

  Science 7

  Geography 9

  Other 27

• Maths 32

  English 28

  Science 14

  Geography 18

  Other 30

• Maths 8

  English 7

  Science 11

  Geography 5

  Other 7.5

Multiple Select

Hover over the image to enlarge it.

• It would be better to use the square for 10 because we wouldn't need as many squares.

• It would be better to use the square for two so that it is easy to see that half of the square means 1.

• There is nothing wrong with using the square for 8.

• Using a square for 8 is good to show 4 and 2 but it will be difficult to show 1, 3, 5 or 7

Your teacher will have set assessments on:

Bar Charts

Pictograms