Which of the following describes a typical distribution of F-ratios?

Select one:

a.

symmetrical with a mean equal to dfbetween

b.

positively skewed with all values greater than or equal to zero

c.

negatively skewed with all values greater than or equal to zero

d.

symmetrical with a mean of zero

A negative correlation means that decreases in the X variable tend to be accompanied by decreases in the Y variable.

Select one:

a.

True

b.

False

Which correlation should be used to measure the relationship between gender and grade point average for a group of college students?

Select one:

a.

Pearson correlation

b.

Spearman correlation

c.

point-biserial correlation

d.

phi-coefficient

In the general linear equation, Y = bX + a, what is the value of a called?

Select one:

a.

the slope

b.

the beta factor

c.

the X-intercept

d.

the Y-intercept

Which of the following accurately describes the expected frequencies for a chi-square test?

Select one:

a.

They are positive whole numbers.

b.

They are always whole numbers.

c.

They can contain both positive and negative values.

d.

They can contain fractions or decimal values.

If other factors are held constant, which set of sample characteristics is most likely to reject a null hypothesis stating that m = 80?

Select one:

a.

M = 85 for a sample of n = 25

b.

M = 90 for a sample of n = 100

c.

M = 85 for a sample of n = 100

d.

M = 90 for a sample of n = 25

If other factors are held constant, which set of sample characteristics is most likely to produce a significant t statistic?

Select one:

a.

n = 25 with s2= 400

b.

n = 100 with s2= 100

c.

n = 100 with s2= 400

d.

n = 25 with s2= 100

The Pearson and the Spearman correlations are both computed for the same set of data. If the Spearman correlation is rS = +1.00, then what can you conclude about the Pearson correlation?

Select one:

a.

It will be negative and have a value of -1.00.

b.

It will be negative.

c.

It will be positive.

d.

It will be positive and have a value of 1.00.

A researcher conducts a hypothesis test using a sample from an unknown population. If the t statistic has df = 35, how many individuals were in the sample?

Select one:

a.

n = 36

b.

n = 35

c.

n=32

d.

n = 34

A sample of n = 4 scores has SS = 48. What is the estimated standard error for the sample mean?

Select one:

a.

1

b.

4

c.

16

d.

2