dear all
i am trying to perform t-test (t.test) in R
here i am putting the commands and answer i got
> t.test(Ht_cm[from_treeline=='above'][type=='SD'],Ht_cm[from_treeline=='below'][type=='SD'])
Welch Two Sample t-test
data: Ht_cm[from_treeline == "above"][type == "SD"] and Ht_cm[from_treeline ==
"below"][type == "SD"] t = 1.4181, df = 159.203, p-value = 0.1581alternative
hypothesis: true difference in means is not equal to 0 95 percent confidence
interval: -1.547018 9.426110 sample estimates:mean of x mean of y 21.34627
17.40672
> t.test(Ht_cm[from_treeline=='above'][type=='SPB'],Ht_cm[from_treeline=='below'][type=='SPB'])Error
> in t.test.default(Ht_cm[from_treeline == "above"][type == "SPB"], : not
> enough 'x' observations>
its ok with the first command, but it says 'not enough 'x' observations', in
the later case i have 31 samples.
how can i do t.test with my day for latter case, will it work by defining the
number of samples, if yes, how can i define it.
thanking you in anticipation
regard
MS
Nepal
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24727::T:WLMTAGL:ON:WL:en-US:WWL_WIN_pcscout:102009
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