Research Methods 2

Study Guide

Chapter 13

 

  1. Define descriptive statistics.  What is the benefit of using statistics?

 

 

  1. What is an asymmetrical distribution called? Explain why.

 

 

  1. Explain Mean, Median, and Mode.  When a distribution is skewed, what is the best measure of central tendency?  Is it possible to determine the median if the data are grouped?

 

 

  1. What does bi-modal mean?

 

 

  1. Explain standard deviation.  How is it calculated?

 

 

  1. What is a normal curve?

 

 

  1. What is the mean and standard deviation of the standardized normal distribution?

 

 

  1. Describe range.

 

 

  1. Define correlation coefficient.

 

 

  1. Define Pearson’r. 

 

 

  1. Define Linear and Curvilinear relationships.

 

 

  1. What is inferential statistics? 

 

 

  1. Define statistical significance.

 

 

  1. What is the null hypothesis?