Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
How to interpret this statistical T Test?
I'm taking a graduate level statistics class and I've having a hard time figuring out if there is a significant difference, using this t test. My null hypothesis was that there was no significant difference between the variables. My t stat was -3.52 and my critical value is 2. (All this figured in excel) Does this mean, since my t state was less than my critical value, that there was no significant difference? I'm confused. HELP!
2 Answers
- cidyahLv 71 decade agoFavorite Answer
Is this a two-tailed test?
A two-tailed test looks as follows:
H0: No significant difference
H1: There is significant difference.
If it is a two-tailed test, you compare the absolute values (computed and critical) 3.52 and 2.
If the computed value exceeds the critical value, you reject the null hypothesis in favor of the alternative and conclude there is a difference. Otherwise, you do not reject the null hypothesis and conclude there is no significant difference.
If it were a one-tailed test, your critical value would be -2 (same sign as t stat). You then compare the absolute values just like you did with a two-tailed test.
Example of a one-tailed test:
H0: No difference between the two group means
H1: group 1 mean < group 2 mean
or
H0: No difference between the two group means
H1: group 1 mean > group 2 mean
For a one-tailed t test, the test stat and the critical value have the same sign.
(you would be comparing 3.52 and 2)
- ?Lv 44 years ago
in case you inspect the definition of a null speculation, it does no longer advise the authentic opposite of the unique speculation. to illustrate, if the unique speculation is the relationship would be sturdy, so like 0.5 and up. The null speculation would not unavoidably might desire to be while the relationship is 0, it could additionally state that the relationship is vulnerable or maybe average. The null speculation in basic terms proves the time-honored speculation incorrect, it would not unavoidably advise that it incredibly is thoroughly opposite to it. desire that enables