A synonym for power is
Type II error
confidence
sensitivity
significance
specificity
Answer: Sensitivity
In the binary content of classification power is also known as statistical sensitivity.
A synonym for power is Type II error confidence sensitivity significance specificity
a. Explain a Type II error and power in context of choosing a smaller level of significance. b. Explain a Type II error and power in context of a greater difference between the null hypothesis claim and the true value of the population parameter.
Alpha refers to __________. A Statistical power B The probability of making a Type II error C The probability of making a Type I error D Effect size
Which of the following will increase the power of a significance test? (A) Increase the Type II Error probability (B) Increase the significance level alpha (C) Select a value for the alternative hypothesis closer to the value of the null hypothesis (D) Decrease the sample size. (E) Reject the null hypothesis only if the P-value is smaller than the level of significance.
As the Type II error, β,of a statistical test increases, the power of the test _____________. increases decreases stays the same randomly fluctuates
Setting a small significance level (i.e., alpha = 0.05) protects against committing a Type II error. True False
a smaller probability of type II error implies higher power of the test. true or false
Compute the statistical power Type II error rate 0.25 sample size 100 alpha level 0.01
compute the statistical power: Type II error rate 0.25 sample size 100 and alpha level 0.01
Although the concepts of sensitivity and specificity are usually applied to diagnostic laboratory or screening tests, they are equally valid for other tests that indicate the presence or absence of disease. These may be tests designed to elicit certain physical signs of disease by examination (e.g. hypertension, cervical cancer, neurological defects, and tendency to hemorrhage) or questions aimed at uncovering symptoms. Suppose that a short psychometric questionnaire that was devised to detect undiagnosed cases of personality disorder was found, after...
What is a Type I error and a Type II error? When is a Type I error committed? How might you avoid committing a Type I error?