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August 22, 2014

August 22, 2014

Posted by **victor** on Saturday, March 30, 2013 at 11:31pm.

- south al -
**bobpursley**, Sunday, March 31, 2013 at 9:35amThere is no information which indicates mode.

The mean is 50. Two standard deviations is 12.

No on mode: in continous distributions, often the mode is defined as the mean. But in test scores, because it is not continous, most scores are not allowed (such as irrational numbers, decimal such as 65.3421 ), and scores are typically integers. I remember I Never gave a 50, it was always 49 or 51. So mode here, is ill defined without more information. I am not certain what a hypothetical normal distribution of test scores is....

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