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| Teaching Since: | Apr 2017 |
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| Questions Answered: | 6064 |
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Doctor of Education in Educational Leadership with a Specialization in Educational Technology
Phoniex University
Oct-1999 - Nov-2005
HR Executive
a21, Inc.
Nov-1998 - Dec-2005
Managers rate employees according to job performance and attitude. The results for several
randomly selected employees are given below.
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Performance     59   63   65   69   58   77   76   69   70   64
Attitude               72   67   78   82   75   87   92   83   87   78
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1.  Construct and show a scatterplot of the data.  Does it show a positive correlation, negative correlation or no correlation?
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2. Find the value of the linear correlation coefficient r.
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3.  Find the critical values for a = 0.05.
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4.  Based on the critical value and the correlation coefficient, is there sufficient evidence to conclude that there is linear correlation between job performance and attitude?  Explain why or why not.
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5.  Find the value of r2 and explain its meaning. Â
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