The histogram is NOT characterized by which of the following?

Select one:

a.

The histogram easily shows exact values of the distribution of a continuous variable

b.

It displays the distribution of interval- or ratio-scaled continuous variables

c.

It describes relative frequencies

d.

The vertical axis is a frequency count of items falling into category

2. By calculating the 90% confidence interval instead of the 95%, we:

Select one:

a.

lower type I error and lower power

b.

lower type I error and increase power

c.

increase type I error and increase power

d.

increase type I error and lower power

3. By calculating the 90% confidence interval instead of the 95%, we:

Select one:

a.

lower type I error and lower power

b.

lower type I error and increase power

c.

increase type I error and increase power

d.

increase type I error and lower power

Clear my choice

Question 23

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Question text

A research that investigated the association between a vegetarian diet and body weight found an Odds Ratio of: 0.83 (95% confidence interval 0.50 - 1.80). Select the best statement that explains these findings:

Select one:

a.

The vegetarian diet is significantly associated with lower body weight

b.

The vegetarian diet is significantly associated with higher body weight

c.

The association between the vegetarian diet and body weight is a chance finding

d.

Those consuming the vegetarian diet are 17% (that is, 1 minus 0.83 in %) more likely to have a lower body weight than those who do not

Clear my choice

4. In the ANOVA procedure, we reject the Null hypothesis when the calculated value of F is:

Select one:

a.

zero

b.

greater than the critical value of F

c.

less than or equal to the critical value of F

d.

equal to the critical value of F

e.

b and d

5. Stability is a measure of:

Select one:

a.

Reliability

b.

Validity

c.

Both reliability and validity

d.

Neither reliability or validity