Question
A set of scores ranges from a high of X = 96 to a low of X = 27. If these scores are placed in
A set of scores ranges from a high of X = 96 to a low of X = 27. If these scores are placed in a grouped frequency distribution table with an interval width of 10 points, the top interval in the table would be ________.
#
90-99
90-100
91-100
87-96
#
After 5 points are added to every score in a distribution, the mean is calculated and found to be = 30. What was the value of the mean for the original distribution?
Answer
30
cannot be determined from the information given
25
35
A sample of n = 5 scores has a mean of M = 12. What is x for this sample?
Answer
12/5 = 2.40
5(12) = 60
cannot be determined from the information given
5/12 = 0.417
What is the shape of the distribution for the following set of data?
Scores: 1, 1, 1, 2, 3, 3, 3
Answer
a.
positively skewed
negatively skewed
symmetrical
rectangular
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