Look at the Chi Square sampling distribution.

观察x平方分布的抽样分布。

youdao

This is why the shape of the Chi Square sampling distribution changes for different df values.

这就是为什么X平方分布的抽样分布的形状随着df值的不同而变化的原因。

youdao

Finally, I demonstrated how to simulate the Chi Square sampling distribution for different degrees of freedom, going beyond simply commenting on its derivation.

最后，我演示了如何模拟不同自由度的x平方分布的抽样分布，而不只是仅说明其来源。

youdao

This sampling helped to work out the distribution and mix of light wavelengths and their relative intensities found in a scene, said Mr Hunt.

BBC: Lens-less camera emerges from metamaterials work

It also carries the risk of producing an inaccurate picture of the overall distribution of moisture, as the spots chosen for sampling may be considerably damper or drier than the soil just a few metres away.

ECONOMIST: Winemaking and radar