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What is A chi-square test of significance is essentially concerned with?
A chi-square test is often used as a "goodness-of-fit" test. You have a null hypothesis under which you expect some results. You carry out observations and get a set of results. The expected and observed results are used to calculate the chi-square statistic. This statistic is used to test how well the observations match the values expected under the null hypothesis. In other words, how good the fit between observed and expected values is.
What is a Alpha Value?
The level of significance; that is the probability that a statistical test will give a false positive error.
Are calculators allowed in GRE test?
No. You aren't allowed to carry a calculator when taking your test. The test software has an on-screen calculator with basic math operation capabilities.
True or False For a given level of significance if the sample size is increased the power of the test will increase?
True
What is the probability of making type 1 error when null hypothesis is true?
It is the same as the significance level of the test - often 5%.
