Question 1
What test would you want to use to test a nondirectional research hypothesis? 
[removed] 
A. 
Onetailed test 
[removed] 
B. 
Twotailed test 
[removed] 
C. 
Nonparametric test 
[removed] 
D. 
Frequency test 
0.5 points
Question 2
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
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
If you posit a relationship between two variables as being positive (or negative), what type of test should you use?
Answer
[removed] 
A. 
Twotailed 
[removed] 
B. 
ANOVA 
[removed] 
C. 
Onetailed 
[removed] 
D. 
Cohen’s d 
0.5 points
Question 5
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
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
What is the term associated with how flat or peaked a distribution appears? 
[removed] 
A. 
Ogive 
[removed] 
B. 
Skewness 
[removed] 
C. 
Kurtosis 
[removed] 
D. 
Variability 
0.5 points
Question 8
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
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
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
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
What term is associated with scores that are at the extreme ends of the distribution? 
[removed] 
A. 
Variability 
[removed] 
B. 
Skew 
[removed] 
C. 
Outlier 
[removed] 
D. 
Percentile 
0.5 points
Question 13
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
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. 

0.5 points
Question 15
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
What is the standard acceptable percentage used by social, behavioral and educational statisticians to determine the probability of an event occurring due to chance? 
[removed] 
A. 
1 percent 
[removed] 
B. 
5 percent 
[removed] 
C. 
95 percent 
[removed] 
D. 
99 percent 
0.5 points
Question 17
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
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
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
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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