Module 7

which of the following is a measure of variation?

• range
• mean
• mode
• frequency 

which statistical measure of central tendency is most affected by extreme scores

• mean
• median 
• mode
• skew 

a researcher calculates statistical significance for her study and finds a 5 percent chance that results are due to chance. which of the following is an accurate interception to this finding?

• this is well beyond the range of statistical significance 
• this is the minimum result typically considered statistically significance 
• this is not statistically significance 
• there is no way to determine statistical significance 

descriptive statistics________,while inferential statistics________

• indicate the significance of the data; summarize the data
• describe data from experiments;describe data from surveys and case studies 
• are measures of central tendency; are measures o variance 
• summarize data;determine if data can be generalized to other populations 

in a normal distribution, what percent of the scores in the distribution falls within one standard deviation on either side of the mean?

• 34 percent
• 40 percent 
• 50 percent 
• 68 percent