[R] test hypothesis in R

Eliza Botto eliza_botto at outlook.com
Wed Mar 23 21:47:50 CET 2016

Thnx Rui,
Just one point though
Should it be alternative="greater" or "less"? Since alternative hypothesis is that model A produced less error.

Date: Wed, 23 Mar 2016 20:44:20 +0000
From: ruipbarradas at sapo.pt
To: eliza_botto at outlook.com
CC: r-help at r-project.org
Subject: Re: [R] test hypothesis in R




t.test(mA, mB, alternative = "greater")

Hope this helps,

Rui Barradas


Citando Eliza Botto <eliza_botto at outlook.com>:

Dear All,

I want to test a hypothesis in R by using student' t-test (P-values).

The hypothesis is that model A produces lesser error than model B at ten stations. Obviously, Null Hypothesis (H0) is that the error produces by model A is not lower than model B.

The error magnitudes are

#model A


c(36.1956086452583, 34.9996207622861, 36.435733025221, 37.2003157636202, 36.1318687775115, 37.164132533536, 35.2028759357069, 36.7719835944373, 38.3861425339751, 37.4174132119744)

#model B


c(39.7655211768704, 40.1730916643841, 39.3699055738618, 39.401619831763, 41.1218634441457, 39.1968630742826, 40.5265825061639, 40.4674956975404, 40.5954427072364, 41.4875529130543)

Now can I test my hypothesis in R?

Thankyou very much in Advance,


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