University of Phoenix Material
Week 5 Practice Problems Worksheet
Chapter 13
The items below (#1, #2 and #3) are based on the following table.
Fatigue Vigor Sleepiness
Tension .36* –.31* .08
Fatigue –.73*** .57**
Vigor –.49**
* p < .05, ** p < .01, *** p < .001
1)The strongest correlation is between __________ and __________. (Give variable names.)
2)The weakest correlation is between __________ and __________. (Give variable names.)
3)The correlation between sleepiness and fatigue is __________ (indicate direction) and __________ (indicate strength).
4)Name the correlation coefficient used to determine the relationship between two ranked or ordinal factors. _____________________________________________.
5)Name the correlation coefficient used to determine the relationship between two interval or radio factors. _____________________________________________.
6)Name the correlation coefficient used to determine the direction and strength of the linear relationship between one factor that is continuous (on an interval or ratio scale of measurement) and another factor that is dichotomous (on a nominal scale of measurement).
_____________________________________________.
7)Name the correlation coefficient that is a measure of the direction and strength of the linear relationship of two dichotomous factors on a nominal scale of measurement.
__________________________________________________.
8) Make up a scatter diagram with 10 dots for each of the following situations: (a) perfect positive linear correlation, (b) large but not perfect positive linear correlation, (c) small positive linear correlation, (d) large but not perfect negative linear correlation, (e) no correlation, and (f) clear curvilinear correlation.
