Transcript 04 Types of Data - Free Resources 4 Mathematics Teachers

General Mathematics
Preliminary
Types of Data
Stage 6 - Year 11
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Types of Data –Quantitative (1/3)
Quantitative means numerical data.
We can find the mean, median, mode and range, etc.
Types of Quantitative Data
Discrete Data
can take only certain values such as whole numbers.
E.g.. The number of desk in each classroom.
28
29
30
31
32
But NOT values in-between.
We can’t have 31.5 desks.
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Types of Data – Quantitative (2/3)
Types of Quantitative Data
Continuous Data:
Can take any value in a certain range.
E.g.. The height of students in each class.
168cm 179cm 150cm 141cm 184cm
And values in-between.
We can have 151.5cm in height.
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Types of Data – Categorical (3/3)
Data can be counted/classified into groups
We can’t find the mean, median and range.
We can only find the Mode.
Examples
•Types of cars: Toyota, Ford, Subaru, …
•Types Trees: Pines, Eucalypt, Melaluca, …
•Hair Colour: Blonde, Brown, Red, …
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