Methodology Review

After an outcome, the tendency to believe that one would have foreseen it is known as_________

• Overconfidence

• Hindsight Bias

• Sampling Bias

• Placebo Effect

A sample that fairly represents a population where each member has an equal chance of inclusion

• Survey

• Random Assignment

• Random Sample

• Census

What is the range of the correlation coefficient?

• 0 to 1

• 0 to -1

• 0 to 10

• -1 to 1

What type of graph is being displayed here?

• Negative skew

• Normal

• Bimodal

• Positive skew

Which of the following coefficients show the strongest correlation?

• -0.96

• 0.0

• .95

• .50

What is the median of this data: 77 ,82 ,45 ,99 ,99 ,27 ,5 ,73 ,76

(a)  

The experimental factor that is manipulated…

• Controlled variable

• Independent variable

• Dependent variable

• Confoudning variable

Experimental results caused by expectations alone…

• Freud Effect

• Hawthorne Effect

• Flynn Effect

• Placebo Effect

What is the mode of this data: 2, 3, 8, 5, 4, 3, 9, 8, 3, 1

(a)  

What percent of the data of a normal distribution falls within 1 standard deviation of the mean

• 34%

• 50%

• 68%

• 40%