Question 1
What test would you want to use to test a nondirectional research hypothesis? 
 Answer
[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? 
 Answer
[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? 
 Answer
[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? 
 Answer
[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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