What is the "significance level" of a statistical test, and how does it relate to our...

What is the "significance level" of a statistical test, and how does it relate to our decision

about whether an independent variable had an effect

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orchestra answered 2 years ago

How does significance level of a statistical test relate to our decision about whether an independent...

How does significance level of a statistical test relate to our decision about whether an independent variable had an effect? How does our choice of significance level impact the likelihood of making a Type I and a Type II error? Be sure to thoroughly distinguish between the two types of errors.

Conduct a t-test for statistical significance of the individual slope coefficients at the 1% level of significance.

SUMMARY OUTPUT Regression Statistics Multiple R 0.727076179 R Square 0.528639771 Adjusted R Square 0.525504337 Standard Error 3.573206748 Observations 455 ANOVA df SS MS F Significance F Regression 3 6458.025113 2152.67504 168.601791 2.7119E-73 Residual 451 5758.280717 12.7678065 Total 454 12216.30583 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Lower 99.0% Upper 99.0% Intercept -0.250148858 0.359211364 -0.6963835 0.48654745 -0.9560846 0.45578693 -1.1793476 0.67904987 RBUK 0.025079378 0.023812698 1.05319345 0.29281626 -0.0217182 0.07187699 -0.0365187 0.08667745 RSUS 0.713727515 0.042328316 16.8617037 8.0578E-50 0.6305423 0.79691273 0.60423372 0.82322131...

What does statistical significance really mean?

What is the significance of the title Big Fish? How does this relate to the folk...

What is the significance of the title Big Fish? How does this relate to the folk saying about being a “big fish in a little pond”? Does Edward Bloom become more than or less than a “big fish”? Provide an example from the text to support your answer.

When we carry out a statistical test with significance level α = 5%, the probability of...

When we carry out a statistical test with significance level α = 5%, the probability of rejecting the null hypothesis when it is true is 5%. Suppose that we independently select 5 random samples of size 100, and for each sample carry out the same statistical test with significance level 5%. We know that the null hypothesis is true. What is the probability that we reject the null hypothesis at most once out of the 5 tests?

How does the Hohenberg-Kohn Theorem relate to statistical mechanics?

Conceptually, what are we doing when we test for statistical significance (such as in a z-test...

Conceptually, what are we doing when we test for statistical significance (such as in a z-test or t-test)? Where does the commonly used 95% confidence level come from? What is an effect size and what additional information does it provide about a finding?

What does statistical significance mean? How do you know if something is statistically significant? What is...

What does statistical significance mean? How do you know if something is statistically significant? What is the difference between statistical significance and practical significance?

Explain the concept of “statistical learning” and why it is important. How does it relate to...

Explain the concept of “statistical learning” and why it is important. How does it relate to “rule learning”, as discussed by Marcus. At what age do babies show evidence of statistical learning and how has this been demonstrated? What about rule learning? Why is it more than just memorizing the exact sound sequences or syllables that they have heard?

What is the difference between practical and statistical significance? A. Statistical significance is associated with p...

What is the difference between practical and statistical significance? A. Statistical significance is associated with p values, but practical significance is not. B. Practical significance is associated with p values, but statistical significance is not. C. There is no difference. D. Neither A nor B is true.

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