You assume that both vectors are randomly sampled, independent and come from a normally distributed population with unknown but equal variances. Two vectors from the same sample group (i.e., paired t-test).A single vector (i.e., one-sample t-test).A t-test can tell whether two groups have the same mean. validated by the data.Ī common strategy to assess hypothesis is to conduct a t-test. Therefore, statistical inference is a strategy to test whether a hypothesis is true, i.e. A data scientist is often exposed to question that can only be answered scientifically. Statistical Inference is the art of generating conclusions about the distribution of the data.
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