Psych: 2.1-2.3 Quiz Review

You need to find the median of a data set. What should you do first? 

• Put the data set in numerical order
• Locate the score in the middle of the data set. 
• Divide the sum of the scores by the number of scores in the set.
• Locate the score that occurs most often. 

How is the mean of a data set found?  

• Put the data set in numerical order
• Locate the score in the middle of the data set. 
• Divide the sum of the scores by the number of scores in the set.
• Locate the score that occurs most often. 

How do I determine the mode of a data set? 

• Put the data set in numerical order
• Locate the score in the middle of the data set. 
• Divide the sum of the scores by the number of scores in the set.
• Locate the score that occurs most often. 

You need to find the median of a data set that includes 10 scores. You have already put the scores in numeric order. How will you find the median?  

• Add the 5th and 6th score together and divide by 2. 
• Divide the sum of all the scores in the set by 2.  
• Divide the sum of all the scores by the number of scores in the set.
• Locate the score that occurs most often. 

Which measure of central tendency is the most stable? 

• Mean
• Median 
• Mode

Which measure of central tendency is the least stable? 

• Mean
• Median 
• Mode

What is best measure of central tendency to use when the data have a skewed distribution? 

• Mean
• Median 
• Mode

What is this a formula for? 
x̄ = ΣΧ ∕ n 

• Sample Mean
• Population Mean
• Standard Distribution 
• Population Distribution

What does the Greek mu ("μ") symbol represent?

• Population Mean
• Sample Mean
• Amount of population scores
• Amount of sample scores

What does the x-bar (x̄) represent?

• Population Mean
• Sample Mean
• Amount of population scores
• Amount of sample scores