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Criteria
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Levels of Achievement
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Content 70%
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Advanced
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Proficient
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Developing
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Not Present
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Points Earned
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Mean, Standard Deviation, and Probability of closing less than the mean (#1)
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3.6 to 4.0 points
Correct mean, standard deviation and probability. The probability is based on the normal distribution and not counting individual data values.
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2.8 to 3.5 points
Minor error(s) in the standard deviation and probability calculations. The probability is correct and based on the normal distribution, not counting individual data values.
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1 to 2.7 points
Probability given by counting data values, not based on the normal distribution.
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0 points
Not present.
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Probability closing above indicated value (#2)
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3.6 to 4.0 points
Correct probability is given, based on the normal distribution, and work is shown.
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2.8 to 3.5 points
Errors in probability calculation such as giving z (not probability) or giving less than rather than greater than.
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1 to 2.7 points
Incorrect or no work shown or probability was given by counting data values, not based on the normal distribution.
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0 points
Not present.
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|
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Probability closing within the indicated amount of the mean (#3)
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3.6 to 4.0 points
Correct probability is given, based on the normal distribution, and work is shown.
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2.8 to 3.5 points
Errors in probability calculation such as not finding correct values, giving z (not probability), or subtracting z’s.
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1 to 2.7 points
Incorrect or no work shown or probability was given by counting data values, not based on the normal distribution.
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0 points
Not present.
|
|
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Probability closing below the indicated value (#4)
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3.6 to 4.0 points
Correct probability is given, based on the normal distribution, and work is shown. Identify if this value is unusual
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2.8 to 3.5 points
Errors in probability calculation such as giving z (not probability) or not identifying if value is unusual.
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1 to 2.7 points
Incorrect or no work shown or probability was given by counting data values, not based on the normal distribution.
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0 points
Not present.
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Unusual closing values (#5)
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3.6 to 4.0 points
Correct top and bottom value given
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2.8 to 3.5 points
Errors in calculation include using the wrong number of standard deviations or only giving one value
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1 to 2.7 points
Gives only definition of unusual but does not calculate or calculated incorrectly or no work is shown or not based on the normal distribution
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0 points
Not present.
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Quartiles (#6)
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3.6 to 4.0 points
Correct quartiles given
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2.8 to 3.5 points
Minor error in quartile calculation
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1 to 2.7 points
Incorrect quartiles
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0 points
Not present.
|
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Validity of normality assumption (#7)
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3.6 to 4.0 points
Correctly uses the definition to identify the validity of the normality assumption and connects it to the data set. If a histogram was constructed it is submitted as part of the answer.
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2.8 to 3.5 points
Incorrectly concludes if the normality assumption is valid, but uses the definition in argument and connects it to the data set.
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1 to 2.7 points
Does not refer to the definition of normality in conclusion, simply answers yes or no and does not connect it to the data set.
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0 points
Not present.
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Structure 30%
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Advanced
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Proficient
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Developing
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Not Present
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Points Earned
|
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Miscellaneous items: submitting the correct data range, correct mean, correct standard deviation
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4.5 to 5.0 points
Submitted data set with correct date range. Responses were formatted in an easy to read file. Work was clearly shown.
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3.5 to 4.4 points
Submitted correct data range. Responses were not formatted in an easy to read file. Work may not be clearly shown.
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1 to 3.4 points
Submitted incorrect data range.
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0 points
Not present.
|
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Grammar and completeness (1 pt per problem)
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6.3 to 7.0 points
Grammar is excellent. Response to last question is in complete sentences. All questions are fully answered.
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4.9 to 6.2 points
Grammar has minor errors. Response to last question is in complete sentences. Some questions may not be fully answered.
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1 to 4.8 points
Errors in grammar. Last question not in complete sentences. Many questions not fully answered.
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0 points
Not present.
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Total
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/40
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Instructor's Comments:
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Gatornc
Project_3_Grading_Rubric.docx
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