Издательство: | Книга по требованию |
Дата выхода: | июль 2011 |
ISBN: | 978-6-1311-8257-0 |
Объём: | 116 страниц |
Масса: | 196 г |
Размеры(В x Ш x Т), см: | 23 x 16 x 1 |
High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! A Z-test is any statistical test for which the distribution of the test statistic under the null hypothesis can be approximated by a normal distribution. Due to the central limit theorem, many test statistics are approximately normally distributed for large samples. Therefore, many statistical tests can be performed as approximate Z-tests if the sample size is not too small. In addition, some statistical tests, such as comparisons of means between two samples, or a comparison of the mean of one sample to a given constant, are exact Z-tests under certain assumptions.
Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.