To create an empirical semivariogram, determine the squared difference between the values for all pairs of locations. When these are plotted, with half the squared difference on the y-axis and the distance that separates the locations on the x-axis, it is called the semivariogram cloud.

Dear Sekgale Kagiso

These tutorials might helpful, have a look:

1. https://www.youtube.com/watch?v=0P0hX1eg1Hk

2. https://www.youtube.com/watch?v=MdxpS33j4nc

3. https://www.youtube.com/watch?v=AiuvilfoKk4

4. https://www.youtube.com/watch?v=tvUC-bnRBZo

Kind Regards

Qamar Ul Islam

Yes

https://docs.qgis.org/2.18/en/docs/user_manual/processing_algs/saga/geostatistics.html