1 The appropriate critical value will be selected from the t distribution again depending on the specific alternative hypothesis and the level of significance.  The third factor is the level of significance. The level of significance which is selected in Step 1 (e.g., Î± =0.05) dictates the critical value. For example, in an upper tailed Z test, if Î± =0.05 then the critical value is Z=1.645.
Definition of sarcasm for English Language Learners. : the use of words that mean the opposite of what you really want to say especially in order to insult someone, to show irritation, or to be funny.
Sarcastic and sardonic are two words that are very similar in meaning, but a difference can be observed in their origins, nature and usage. The main difference between sarcastic and sardonic is that being sarcastic often refers to making sharp, bitter, cutting remarks or a taunts in order to convey contempt while being sardonic refers to being cynical, and humorous in the face of adversity. What Does Sarcastic Mean. Sarcasm is a sharp, bitter, cutting remark or a taunt that conveys contempt. The word sarcasm comes from the Greek sarkasmos meaning to tear flesh, bite the lip in rage, or sneer. Sarcasm can contain ambivalence or irony. Sarcasm can be also defined as the use of irony to mock or convey contempt.