072 - Summarizing Data 9/11/2007 9:02:00 AM Frequency...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Summarizing Data 11/09/2007 09:02:00 Frequency Distribution It is a table that divides the numbers into categories Histogram A graphical distribution of frequencies Stem-and-leaf display (stemplot) There is one number for every dataset Retains the original data (at least the most important digits) Puts the data in order Shapes of datasets Symmetric o One side is a “mirror” reflection of the other o The mean is approximately equal to the medium Skewed to the right (or positively skewed): ex) age of classmates o Higher value are more spread out than lower values o Most values are moderate or small: a few values are very large o The mean is larger than the median Skewed to the left (or negatively skewed): ex) scores on easy test o Lower values are more spread out than higher values o Most values are moderate or large; a few values are very small
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/29/2008 for the course STAT 1200 taught by Professor Larryreis during the Fall '07 term at Missouri (Mizzou).

Page1 / 3

072 - Summarizing Data 9/11/2007 9:02:00 AM Frequency...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online