Some multiple choice questions in statistics

Question 1

  1.  

What test would you want to use to test a nondirectional research hypothesis?

  1. Answer

[removed]

A.

One-tailed test

[removed]

B.

Two-tailed test

[removed]

C.

Non-parametric test

[removed]

D.

Frequency test

0.5 points  

Question 2

  1.  

Approximately what percent of scores will fall within one standard deviation of the mean under the normal curve?

Answer

[removed]

A.

14

[removed]

B.

34

[removed]

C.

68

[removed]

D.

95

0.5 points  

Question 3

  1.  

The degree of risk you are willing to take that you will reject the null hypothesis when it is actually true is called ____________.

Answer

[removed]

A.

Statistical significance

[removed]

B.

Type II error

[removed]

C.

Type III error

[removed]

D.

Power

0.5 points  

Question 4

  1.  

If you posit a relationship between two variables as being positive (or negative), what type of test should you use?

Answer

[removed]

A.

Two-tailed

[removed]

B.

ANOVA

[removed]

C.

One-tailed

[removed]

D.

Cohen’s d

0.5 points  

Question 5

  1.  

What does your research question help to guide?

Answer

[removed]

A.

Relationships

[removed]

B.

Hypothesis

[removed]

C.

Sampling error

[removed]

D.

Average score

0.5 points  

Question 6

  1.  

If the obtained value is less than the critical value, what should you do?

Answer

[removed]

A.

Reject the null hypothesis

[removed]

B.

Accept the null hypothesis

[removed]

C.

Set a higher p value

[removed]

D.

Increase your sample

0.5 points  

Question 7

  1.  

What is the term associated with how flat or peaked a distribution appears?

  1. Answer

[removed]

A.

Ogive

[removed]

B.

Skewness

[removed]

C.

Kurtosis

[removed]

D.

Variability

0.5 points  

Question 8

  1.  

When describing a set of nominal data, a researcher should use which of the following measures of central tendency?

Answer

[removed]

A.

Mode

[removed]

B.

Median

[removed]

C.

Standard deviation

[removed]

D.

Mean

0.5 points  

Question 9

  1.  

When the sample accurately represents the population, the results of the study are said to have a high degree of _____________.

Answer

[removed]

A.

reliability

[removed]

B.

validity

[removed]

C.

consistency

[removed]

D.

generalizability

0.5 points  

Question 10

  1.  

When calculating the average for a set of data with extreme scores (eg. household income), which measure of central tendency would be best used?

Answer

[removed]

A.

mean

[removed]

B.

median

[removed]

C.

mode

[removed]

D.

standard error

0.5 points  

Question 11

  1.  

Which of the following is a measure of how well a sample approximates the characteristics of a population?

Answer

[removed]

A.

sampling accuracy

[removed]

B.

sampling error

[removed]

C.

sampling generalizability

[removed]

D.

sampling consistency

0.5 points  

Question 12

  1.  

What term is associated with scores that are at the extreme ends of the distribution?

  1. Answer

[removed]

A.

Variability

[removed]

B.

Skew

[removed]

C.

Outlier

[removed]

D.

Percentile

0.5 points  

Question 13

  1.  

Which of the following provides you with a measure of how well your sample approximates the population?

Answer

[removed]

A.

Generalizability

[removed]

B.

Population

[removed]

C.

Hypothesis

[removed]

D.

Sampling error

0.5 points  

Question 14

  1.  

When are descriptive measures most often used?

Answer

[removed]

A.

to describe how often something occurs

[removed]

B.

to determine if a sample is representative of a population

[removed]

C.

[removed]

D.

to determine the effect of an intervention

0.5 points  

Question 15

  1.  

How are inferential statistics most often used?

Answer

[removed]

A.

to infer to the quality of data collected

[removed]

B.

to organize and describe data

[removed]

C.

to make inferences from the sample to the population

[removed]

D.

0.5 points  

Question 16

  1.  

What is the standard acceptable percentage used by social, behavioral and educational statisticians to determine the probability of an event occurring due to chance? 

  1. Answer

[removed]

A.

1 percent

[removed]

B.

5 percent

[removed]

C.

95 percent

[removed]

D.

99 percent

0.5 points  

Question 17

  1.  

What type of hypothesis posits a difference between groups where the direction is specified?

Answer

[removed]

A.

Nondirectional hypothesis

[removed]

B.

Directional hypothesis

[removed]

C.

Research hypothesis

[removed]

D.

Null hypothesis

0.5 points  

Question 18

  1.  

Which level of measurement is concerned only with the characteristics of an outcome that fits into a category?

Answer

[removed]

A.

ordinal

[removed]

B.

interval

[removed]

C.

rank

[removed]

D.

nominal

0.5 points  

Question 19

  1.  

What is the basis for the normal curve and inferential statistics?

Answer

[removed]

A.

mean

[removed]

B.

asymptotic

[removed]

C.

probability

[removed]

D.

symmetry

0.5 points  

Question 20

  1.  

Variability is a measure of how much individual scores differ from the ______________.

Answer

[removed]

A.

Mean

[removed]

B.

Range

[removed]

C.

Standard deviation

[removed]

D.

Variance

 

 

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