scientific research, the null hypothesis (often denoted H0) is the claim that the effect being studied does not exist. The null hypothesis can also be described...
39 KB (5,319 words) - 17:06, 30 April 2024
epistemological importance of the choice of null hypothesis has gone largely unacknowledged. When the null hypothesis is predicted by theory, a more precise...
82 KB (10,222 words) - 07:35, 1 June 2024
statistical hypothesis testing, a result has statistical significance when a result at least as "extreme" would be very infrequent if the null hypothesis were...
38 KB (4,059 words) - 21:40, 29 May 2024
recognized: Type I errors (null hypothesis is rejected when it is in fact true, giving a "false positive") and Type II errors (null hypothesis fails to be rejected...
78 KB (8,784 words) - 23:50, 27 May 2024
P-value (category Statistical hypothesis testing)
In null-hypothesis significance testing, the p {\displaystyle p} -value is the probability of obtaining test results at least as extreme as the result...
55 KB (6,739 words) - 18:14, 11 May 2024
-value by comparing T {\displaystyle T} to its distribution under the null hypothesis. The ranks are defined so that R i {\displaystyle R_{i}} is the number...
42 KB (7,161 words) - 22:17, 19 February 2024
statistical hypothesis testing, two hypotheses are compared. These are called the null hypothesis and the alternative hypothesis. The null hypothesis is the...
20 KB (2,583 words) - 12:20, 5 May 2024
valid when the test statistic is chi-squared distributed under the null hypothesis, specifically Pearson's chi-squared test and variants thereof. Pearson's...
21 KB (2,361 words) - 01:53, 12 May 2024
Type I and type II errors (category Statistical hypothesis testing)
In statistical hypothesis testing, a type I error, or a false positive, is the rejection of the null hypothesis when it is actually true. For example,...
31 KB (4,487 words) - 23:50, 2 May 2024
Power of a test (category Statistical hypothesis testing)
statistics, the power of a binary hypothesis test is the probability that the test correctly rejects the null hypothesis ( H 0 {\displaystyle H_{0}} ) when...
26 KB (4,217 words) - 16:03, 19 May 2024