SOLUTION: Need some help
Exam Grades, Which if these grades has a better relative position?
a. A grade of 82 on a test with X=85 and s=6 (Note there is a line over the X)
b. A grade
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Question 78698: Need some help
Exam Grades, Which if these grades has a better relative position?
a. A grade of 82 on a test with X=85 and s=6 (Note there is a line over the X)
b. A grade of 56 on a test with X=60 and s=5 ( Note there is a line over the X)
thank you for your time...Dave
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Which if these grades has a better relative position?
a. A grade of 82 on a test with X=85 and s=6 (Note there is a line over the X)
b. A grade of 56 on a test with X=60 and s=5 ( Note there is a line over the X)
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x-bar is the sample mean; s is the sample standard deviation.
a. A grade of 82 on a test with X=85 and s=6 (Note there is a line over the X)
Meansure the distance 83 is from the mean using s as the unit of measure:
(82-85)/6 = -1/2
This means that 82 is one-half standard deviation below the mean score.
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b. A grade of 56 on a test with X=60 and s=5 ( Note there is a line over the X)
(56-60)/5= -4/5= -0.8
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The grade of 56 is further below the mean of its sample then the 82, so 56
is a worse score; 82 is the better of the two.
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Cheers,
Stan H.
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