suppose you have this set of data and its saved in file called (gobiants)

site	Region	PlantCov
1	Dry Steppe	40
2	Dry Steppe	52
3	Dry Steppe	40
4	Dry Steppe	43
5	Dry Steppe	27
6	Gobi Desert	30
7	Gobi Desert	16
8	Gobi Desert	30
9	Gobi Desert	56
10	Gobi Desert	22
11	Gobi Desert	14

in RStudio :

find the mean and mode for PlantCov for the first 5 sites, and then the mean and mode for PlantCov for the rest 6 sites.

i need help just writing the code for this. thank you