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If there are 4 groups 1,2,3,4 the question is to find if there's difference between group(1,2,3) and 4 in r In this case, should I

If there are 4 groups 1,2,3,4

the question is to find if there's difference between group(1,2,3) and 4 in r

In this case, should I use ANOVA? or t-test?

Thanks for the advice

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