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Turn tallies into a frequency table

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Data Handling and Presentation · Organise observations with tally marks · 3:48

You'll learn: Read category counts and verify totals

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Turn tallies into a frequency table

3:48

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Turn tallies into a frequency table

You'll learn: Read category counts and verify totals

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Organise observations with tally marks

1

Tallies help us keep count
3:30
Tallies help us keep count
You'll learn: Record observations in groups of five

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Read a pictograph and its key

2

A picture can stand for several objects
3:28
A picture can stand for several objects
You'll learn: Use a key to interpret a pictograph
Half a symbol has a meaning too
3:24
Half a symbol has a meaning too
You'll learn: Read a partial symbol when the key permits it

Next topic

Construct a pictograph

2

Choose a useful pictograph key
3:38
Choose a useful pictograph key
You'll learn: Balance space and accurate representation
Build and check the picture display
3:38
Build and check the picture display
You'll learn: Convert counts into a titled labelled pictograph

Next topic

Choose and read a bar graph scale

3

A bar height represents a count
3:47
A bar height represents a count
You'll learn: Read categories and values from the axes
The scale determines the reading
3:36
The scale determines the reading
You'll learn: Interpret equally spaced marks with different numerical steps
Read horizontal bars too
3:37
Read horizontal bars too
You'll learn: Transfer the reading method to a horizontal graph

Next topic

Construct a labelled bar graph

3

Plan the axes and scale
3:35
Plan the axes and scale
You'll learn: Choose a scale that fits the largest count
Draw a complete bar graph
3:40
Draw a complete bar graph
You'll learn: Plot counts with consistent widths and spacing
Repair a graph that misrepresents counts
3:31
Repair a graph that misrepresents counts
You'll learn: Check baseline scale labels and bar heights

Next topic

Compare categories and justify conclusions

2

Use a graph to answer a question
3:43
Use a graph to answer a question
You'll learn: Find totals differences and most or least frequent categories
What can this survey actually tell us
3:52
What can this survey actually tell us
You'll learn: Distinguish supported conclusions from guesses

Next topic

Make a clear and appealing data presentation

1

Design should help the reader
3:48
Design should help the reader
You'll learn: Choose readable labels orientation and simple decoration

Next topic

Understand a factor through equal groups

1

Factors make exact groups
3:32
Factors make exact groups
You'll learn: Connect a factor to division without leftovers