This preview shows page 1. Sign up to view the full content.
4th Sept. 2011
Module 2, GDB 2
RE: Explain what is wrong and why it is wrong:
1.
For a given data set, the mean and median are always nearly equal.
2.
In the same set of data, no two may have the same z score.
3.
A negative z score is unusual.
4.
For a set having only negative values, both the mean and standard deviation will be
negative.
1)
False. “The mean of a data set is the sum of the data entries divided by the number of
entries. The median of a data set is the value that lies in the middle of the data when the
data set is ordered” . On the other hand, if the data is skewed to the left or right, it could
be nearly equal. This is not always true for every data set. There would have to be
outliners in order to have the data set skewed.
This is the end of the preview. Sign up
to
access the rest of the document.
This note was uploaded on 10/19/2011 for the course MATH 201 taught by Professor R during the Fall '11 term at Lee.
 Fall '11
 R
 Math

Click to edit the document details