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Mathematics
Quick fact
To compute variance, you first square each difference from the mean, then average those squares. This squaring makes larger deviations count disproportionately more.
Why this is interesting
You know that the average of your friends' heights tells you something about them, but does it tell you whether they are all nearly the same height or wildly different? Variance is the number that captures exactly that distinction.
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Subjects · study & training · careers
Choose something you are considering. FACTREE will give you a clear picture of what it contains, how its main parts connect and where it could lead.
This private catalogue connects 31 subjects, study routes and careers across six broad areas. Public Maps and learner routes remain off.
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See what programming involves, how its main areas connect, and whether you find the knowledge interesting enough to take it further.
Structuring the Programming Map…
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