Answer: Setswana is the modal language.
To obtain the answer to question 4, you could have used the following commands:
The commands above create the following tables:
language |
spoken at home | Freq. Percent Cum.
---------------+-----------------------------------
Setswana | 3325 84.76 84.76
English | 82 2.09 86.85
Kalanga | 216 5.51 92.35
Sekgalangadi | 119 3.03 95.39
Seyei | 3 0.08 95.46
Herero | 20 0.51 95.97
Setswapong | 3 0.08 96.05
Sebira | 6 0.15 96.20
Sembukushu | 6 0.15 96.35
Sekgothu | 4 0.10 96.46
Afrikaans | 9 0.23 96.69
Ndebele | 9 0.23 96.92
Zezulu/Shona | 17 0.43 97.35
Indian | 1 0.03 97.37
Other African | 77 1.96 99.34
Other Asian | 1 0.03 99.36
Other (NEC) | 25 0.64 100.00
---------------+-----------------------------------
Total | 3923 100.00
Looking at the frequency distribution above, it is quite clear that "Setswana" is the language spoken most often and thus is the modal language.