Saturday, October 24, 2015

Measure of central tendency help?I am wondering about the position of the central tendency of mean, median and mode for a symmetric distribution...

The measures of central tendency
are...


mean - the average of
the numbers in the data


median
- the middle number when the data is ordered from least to
greatest


mode - the number
that occurs the most often in a set of data


Data can have
symmetric distribution, a positively skewed distribution, or a negatively
skewed distribution.


symmetric distribution
- the mean, median, and mode are
equal


positively skewed
distribution
- the mean is greater than the median, which is greater than
the mode


negatively skewed
distribution
- the mean is less than the median, which is less than the
mode


In summary...


* in a
symmetric distribution, the mode is in the center


* in a
positively skewed distribution, the mode is on the left


*
in a negatively skewed distribution, the mode is on the right

No comments:

Post a Comment

What is the meaning of the 4th stanza of Eliot's Preludes, especially the lines "I am moved by fancies...Infinitely suffering thing".

A century old this year, T.S. Eliot's Preludes raises the curtain on his great modernist masterpieces, The Love...