Why do psychologists use the 5 level of significance?
1 mark for a limited or incomplete definition of a Type II error. 1 mark for a reason for why the 5% level of significance is used in psychological research. The 5% level is used as it strikes a balance between the risk of making the Type I and II errors (or similar).
What type of data is a yes or no question?
Remember that nominal data are categorical data without any order of value. Two good examples of nominal data are “yes-no” and “true-false” answers on a survey.
Which is the t-test should I use?
If you are studying two groups, use a two-sample t-test. If you want to know only whether a difference exists, use a two-tailed test. If you want to know if one group mean is greater or less than the other, use a left-tailed or right-tailed one-tailed test. What is the range in statistics?
What do you need to know about self testing?
Currently available self-collection kits and tests are used for the detection of current infection. Read the complete set of the manufacturer’s instructions before using the test. Talk to a healthcare provider if you have questions about the test or your results.
What kind of antigen test should I get?
But if the antigen test is negative, you should get retested using a molecular (aka PCR) test and be sure to isolate yourself until you receive the result. For most people who do not have symptoms but want to be tested because they may have been exposed, the molecular/PCR test is the better choice.
When to use a paired or two sample t test?
If you are studying one group, use a paired t-test to compare the group mean over time or after an intervention, or use a one-sample t-test to compare the group mean to a standard value. If you are studying two groups, use a two-sample t-test. If you want to know only whether a difference exists, use a two-tailed test.