Z-Scores and Distribution Skewness
In a given dataset, 60 percent of the observations have a z-score less than . By contrast, 50 percent of observations in a normal distribution have a z-score less than . What does this finding suggest about the shape of the dataset’s distribution?
A
It suggests that the distribution is skewed to the left with a long left tail.
B
It suggests that the distribution is skewed to the right since more than 50% of the observations fall below the mean (z = 0).
C
It indicates that the data is uniformly distributed across z-scores.
D
It indicates a perfectly symmetric, normal distribution.
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