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# DATA

Mathematical Language for Fifth Class (Primary School Curriculum Ireland)
by

## Sharon Staveley

on 28 October 2014

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#### Transcript of DATA

DATA
What is Data?
We live in an information society with data about data!
Presenting and analysing data gives it meaning.
Pictograms
Bar Charts
Title, axis, scale, key
Pie Charts
Averages
Pictograms
represent data using images. It is a fun and interesting way to show data. Pictograms always have a
key
to make sense of what the images mean.
A graphical display of data using rectangular bars to show how large each value is. The bars can be
horizontal
or
vertical
. Here is an example of test result data and a
single bar chart
.
These are important elements when representing data.
The
Title
tells us what the data represents.
Y axis
X axis
A special chart that uses
pie slices
to show relative sizes of data.
Imagine you just did a survey of your friends to find how they travel to school. In this chart the number of children has been included on each slice and there is a
key
to show what the slice colour represents.
Data is a collection of facts, such as values or measurements.

It can be numbers, words, measurements, observations or even just descriptions of things.
The
horizontal
X
axis
of this chart shows the specific grades being compared, and the
vertical
Y
axis
represents an actual value. The
scale
is on the Y axis and displays equal divisions for equal values.
The
key
explains what each colour on a chart relates to.
The average is the calculated central value of a set of numbers.
To find the
average: add up all the numbers, then divide by how many numbers there are
.

Example
: what is the average of 2, 7 and 9?
Add the numbers: 2 + 7 + 9 = 18
Divide by how many numbers (i.e. we added 3 numbers): 18 ÷ 3 = 6
So the average is 6!
Tally Sheets
Tallying
is a way of adding that uses groups of five. A tally sheet is a fast way to record results using lines instead of writing out words or figures. The data is collected in groups.
The example below is a tally to show the colour of cars that pass by to find the total frequencies at the end of a one-hour period.
References
British Broadcasting Corporation (2014) Handling Data. [Online]. Available at: www.bbc.co.uk/bitesize/ks3/maths/handling_data/ (Accessed: 20 October 2014).
British Broadcasting Corporation (2014) Tally and Frequency Chart example, Images. [Online]. Available at: http://www.bbc.co.uk/bitesize/ks3/maths/handling_data/collecting_recording/revision/3/ (Accessed: 20 October 2014).
Hot Butter Studio (2014) Data Infographic Photo. [Online]. Available at: http://www.hotbutterstudio.com/alps/ (Accessed: 20 October 2014).
11 Plus for Parents (2014) Handling Data - Pie Charts. [Online]. Available at: http://www.11plusforparents.co.uk/Maths/handling%20data%204.html (Accessed: 20 October 2014).
11 Plus for Parents (2014) Handling Data - Pie Charts, Methods of Travelling to School, Image. [Online]. Available at: http://www.11plusforparents.co.uk/Maths/handling%20data%204.html (Accessed: 20 October 2014).
Math Is Fun (2014) Bar Graph example: Student Grades, Images. [Online]. Available at: http://www.mathsisfun.com/data/bar-graphs.html (Accessed: 20 October 2014).
Math Is Fun (2014) Pictograph example, Apples Sold, Images. [Online]. Available at: http://www.mathsisfun.com/data/pictographs.html (Accessed: 20 October 2014).
Math Is Fun (2014) Using and Handling Data. [Online]. Available at: www.mathsisfun.com/data/ (Accessed: 20 October 2014).

Solomun (2008) The Way Back. [Music]. Available at: (Accessed: 20 October 2014).
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