Five mark example problem VII — task. Maths TNSB Mentoring, Class 10.

Answer variants:

\frac{n^{2} - 1}{12}

\frac{n^{2} + 1}{12}

\frac{n - 1}{2}

\frac{n + 1}{2}

Find the mean and variance of the first \(n\) natural numbers.

Answer:

Mean \(=\)

Variance \(=\)

Did you find an error?

3. Five mark example problem VII