This girl got an A- in KCSE 2012 & is very keen on taking Bachelor of Economics & Statistics course at UoN/KU.
I have researched on the course, what it entails and possible career positions, but I found it a bit vague.

Please advice if it’s best to go ahead, why and what will she become after graduating 4yrs later.

Where will she get her internship, job? & the overall question, is it good as a career choice?

Asanteni

Bree, i do not think the course is ideal for such an excellent performance. Unless thats what really the student want, but the driving force would be what she wants to be after. There are other far much better courses like BSC ( Applied Statistics), BSC ( Acturial Science), Bachelor of Business Management ( which has several options, marketing, Finance , accounting, HR, Procurement etc)
There is an exhibition been organized where most University will participate. It may be ideal for her to visit and learn more on careers choice. About UON/KU, the student can also explore other universities, its her choice here and most decisions are irreversible once made! Make a wise choice.

Very demanding: both intellectually and the time required.

Assuming she finishes the Bachelor of Economics & Statistics course in 4 years it will be right about election time and she can focus on opinion polling and associate with a presidential candidate. A few years later she will be building castles in some slopes of a mountain.

Opinion polls require Statisticians and research oriented people. That's why sometimes we get distorted information maybe due to the data collection methods.

My take is ... let her take a more directional course, if its Economics, let it be economics if Statistics, let it be Stats. This blending sometimes is not healthy unless she wants to take up teaching careers then diversification would be ideal. But also also " mix well"