What are the mistakes of these sentences?

[Dodgewiper]

1-The results taken from elasticities shows that transportation group is counted luxury in rural areas and house group is counted necessary.

2-The percent of under poverty line families of rural areas in comparison with the whole country is relatively good.

3- house group has the most portion of the poverty line in rural areas in a way that this number has reached 50% in year 1998.

4- chart 9 shows the poverty line portion of different goods group from average costs of each goods group in rural areas.

5- the parameters of this model are A1, A2, ..., A8 which the model is non-linear toward them.

thank you very much in advance.
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Man gets and forgets, God gives and forgives.

[Dozy]

Before I try to answer this, could you explain what "transportation group", "house group" and "goods group" are intended to mean?

[Dodgewiper]

These ( transportation and house group) are some kinds of goods group. for example; the costs of the food group is more than the costs of the transportation group. This text is related to economics.
_________________
Man gets and forgets, God gives and forgives.

[Dozy]

[Dodgewiper]

I meant "commodity group" from "goods group", I think that this term is more natural, isn't it?
_________________
Man gets and forgets, God gives and forgives.

[Dozy]

"commodity group" does seem to be a more widely used term. I'm afraid I'm really not sure if it is suitable in your case. I would not naturally call houses and transportation "commodities", but I think you would need to check with an expert in this subject area. Another possibility, that I think I mentioned in another thread, is "market sector".