On friday I have a statistics GCSE Exam and I'm bloddy nervous so I'd thought I'd start a little thread on it hoping if you lovely people can with me luck.![]()
Also feel free to post little bits of revision notes to remember so myself and anyone who is also doing it can benefit from.
He's my essential thing to remember:
Standard deviation = sd = square root [sum( x - xbar)^2 / (N-1)]
Damn, I am sooooo nervous about it and its to bloody hard to revise!!!!
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