Basically I have to prove that the sample variance of a sample is given by:
For my purposes it's sufficient to show that
Help is appreciated. Thanks in advance.
If I made any mistakes inputting the sums please let me know.
Basically I have to prove that the sample variance of a sample is given by:
For my purposes it's sufficient to show that
Help is appreciated. Thanks in advance.
If I made any mistakes inputting the sums please let me know.
Your starting point should be the definition of sample variance: Sample Variance -- from Wolfram MathWorld
What progress have you made from this?