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  2. Welch's t-test - Wikipedia

    en.wikipedia.org/wiki/Welch's_t-test

    In statistics, Welch's t-test, or unequal variances t-test, is a two-sample location test which is used to test the (null) hypothesis that two populations have equal means. It is named for its creator, Bernard Lewis Welch , and is an adaptation of Student's t -test , [ 1 ] and is more reliable when the two samples have unequal variances and ...

  3. Portal:Current events/July 2024/Calendar - Wikipedia

    en.wikipedia.org/.../July_2024/Calendar

    This page was last edited on 17 December 2023, at 04:19 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  4. Talk:Welch's t-test - Wikipedia

    en.wikipedia.org/wiki/Talk:Welch's_t-test

    BTW, it makes sense to apply Welch's test routinely. If sample sizes are equal and variances are identical the result matches the conventional t-test. Therefore, in R by default Welch’s test is applied: t.test(data1, data2, alternative="two.sided") is equivalent to t.test(data1, data2, alternative="two.sided", var.equal=FALSE) One has to state

  5. Print an AOL Calendar

    help.aol.com/articles/print-an-aol-calendar

    Using AOL Calendar lets you keep track of your schedule with just a few clicks of a mouse. While accessing your calendar online gives you instant access to appointments and events, sometimes a physical copy of your calendar is needed. To print your calendar, just use the print functionality built into your browser.

  6. Student's t-test - Wikipedia

    en.wikipedia.org/wiki/Student's_t-test

    From the t-test, the difference between the group means is 6-2=4. From the regression, the slope is also 4 indicating that a 1-unit change in drug dose (from 0 to 1) gives a 4-unit change in mean word recall (from 2 to 6). The t-test p-value for the difference in means, and the regression p-value for the slope, are both 0.00805. The methods ...

  7. Template:Calendar - Wikipedia

    en.wikipedia.org/wiki/Template:Calendar

    Display a year or month calendar Template parameters [Edit template data] Parameter Description Type Status Year year the ordinal year number of the calendar Default current Number suggested Month month whether to display a single month instead of a whole year, and which one Default empty Example current, next, last, 1, January String suggested Show year show_year whether to display the year ...

  8. List of statistical tests - Wikipedia

    en.wikipedia.org/wiki/List_of_statistical_tests

    Print/export Download as PDF; ... Welch's t-test: interval: normal: unpaired: 2: No [8] ... This page was last edited on 5 July 2024, ...

  9. Behrens–Fisher problem - Wikipedia

    en.wikipedia.org/wiki/Behrens–Fisher_problem

    A follow-up paper showed that the classic paired t-test is a central Behrens–Fisher problem with a non-zero population correlation coefficient and derived its corresponding probability density function by solving its associated non-central Behrens–Fisher problem with a nonzero population correlation coefficient. [14]

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