S3 Edexcel Query
Hey,
So in the Edexcel S3 book, chapter 3 examples 8 and 10, they're using this formula to calculate the estimated variance: (uploaded)
Why is the denominator (n-1) instead of n as usual? Am I missing something completely obvious?
Any help will be much appreciated thanks!
So in the Edexcel S3 book, chapter 3 examples 8 and 10, they're using this formula to calculate the estimated variance: (uploaded)
Why is the denominator (n-1) instead of n as usual? Am I missing something completely obvious?
Any help will be much appreciated thanks!
Original post by Nikhilm
Hey,
So in the Edexcel S3 book, chapter 3 examples 8 and 10, they're using this formula to calculate the estimated variance: (uploaded)
Why is the denominator (n-1) instead of n as usual? Am I missing something completely obvious?
Any help will be much appreciated thanks!
So in the Edexcel S3 book, chapter 3 examples 8 and 10, they're using this formula to calculate the estimated variance: (uploaded)
Why is the denominator (n-1) instead of n as usual? Am I missing something completely obvious?
Any help will be much appreciated thanks!
http://www.thestudentroom.co.uk/forumdisplay.php?f=38
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