SOC 390 Concept Quiz Statistical Inference

Question 1

1 / 1 pts

A(n) _______ difference is due to some systematic influence and not due to chance.

significant

insignificant

serendipitous

null

Question 2

1 / 1 pts

After you compare the obtained value with the critical value, you ______.

compute the test statistic value

set the level of significance

reject the null hypothesis if the obtained value is more extreme than the critical value

provide a statement of the null hypothesis

Question 3

1 / 1 pts

After you provide a statement of the null hypothesis, you ______.

select the appropriate test statistic

compute the test statistic value

set the significance level (alpha)

compare the obtained value with the critical value

Question 4

1 / 1 pts

If a researcher sets the alpha at .05, what is the probability of making a Type I error?

5%

1%

10%

20%

Question 5

1 / 1 pts

The final step in hypothesis testing is to ______.

compute the test statistic value

provide a statement of the null hypothesis

determine the critical value

compare the obtained value with the critical value and make a final determination

Question 6

1 / 1 pts

What Greek letter is associated with Type I error?

Ψ

Σ

β

α

Question 7

1 / 1 pts

There is always the possibility of error in statistics because the _______ is not directly tested.

significance

probability

population

sample

Question 8

1 / 1 pts

Descriptive statistics uses a wide variety of statistical tests and analyses in order to test differences between groups or relationships between variables.

True

False

Question 9

1 / 1 pts

The critical value is the value that results from calculating a statistical test.

True

False

Question 10

1 / 1 pts

When making a decision in statistics using a sample, there is always some possibility of error.

True

False

Quiz Score: 10 out of 10