â¢ The Chi-square test can be used to test for equality of. proportions between two or more groups. â The null hypothesis for this test is that the 2 proportions are equal. â The alternative hypothesis is that the proportions are not equal (test for a. difference in either direction) PubH 6414 Section 12 Part 2 3.
Definition of nosh. 1  intransitive verb. : 2  to eat a snack : munch noshing on pizza We noshed at the amusement park.
Definition of twitch. 1 : an act of twitching; especially : a short sudden pull or jerk. 2 : a physical or mental pang a twitch of remorse. 3 : a loop of rope or strap that is tightened over a horse's lip as a restraining device. 4a : a brief spasmodic contraction of the muscle fibersb : a slight jerk of a body part.