[R] Choice of statistical test (in R) of two apparently different distributions
Pascal Oettli
kridox at ymail.com
Thu May 9 03:42:07 CEST 2013
Hello,
1) Why 'x' should be statistically different from others?
2) 'y' looks to be bimodal. The mean is not an appropriate measurement
for this kind of distribution.
Regards,
Pascal
On 05/09/2013 10:29 AM, Gundala Viswanath wrote:
> I have the following list of data each has 10 samples.
> The values indicate binding strength of a particular molecule.
>
> What I want so show is that 'x' is statistically different from
> 'y', 'z' and 'w'. Which it does if you look at X it has
> more values greater than zero (2.8,1.00,5.4, etc) than others.
>
> I tried t-test, but all of them shows insignificant difference
> with high P-value.
>
> What's the appropriate test for that?
>
> Below is my code:
>
> x <-
> c(2.852672123,0.076840264,1.009542943,0.430716968,5.4016,0.084281843,0.065654548,0.971907344,3.325405405,0.606504718)
> y <-
> c(0.122615039,0.844203734,0.002128992,0.628740077,0.87752229,0.888600425,0.728667099,0.000375047,0.911153571,0.553786408);
> z <-
> c(0.766445916,0.726801899,0.389718652,0.978733927,0.405585807,0.408554832,0.799010791,0.737676439,0.433279599,0.947906524)
> w <-
> c(0.000124984,1.486637663,0.979713013,0.917105894,0.660855127,0.338574774,0.211689885,0.434050179,0.955522972,0.014195184)
>
> t.test(x,y)
> t.test(x,z)
>
> --END--
>
> G.V.
>
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>
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