Box Plot
AN
ASSIGNMENT
ON
BOX PLOT
COURSE CODE: URP1251
COURSE TITLE: STATISTICS FOR PLANNERS |
SUBMITTED BY MEHEDI MUDASSER 110412
SUBMISSION DATE: 09/05/2012 DISCUSSION OF BOX PLOT GRAPH WITH APPROPRIATE EXAMPLES The box plot goes back to John Tukey, which published in 1977 this efficient method to display robust statistics. Box plots, the term of graphical presentation of data. So it is one of the main parts of statistics because Statistics is the science of collecting, organizing, presenting, analyzing and interpreting data to assist in making more effective decisions.
Definition
The box plot is a graphical representation of data that shows a data set’s lowest value, highest value, median value, and the size of the first and third quartile. The box plot is useful in analyzing small data sets that do not lend themselves easily to histograms. Because of the small size of a box plot, it is easy to display and compare several box plots in a small space. A box plot is a good alternative or complement to a histogram and is usually better for showing several simultaneous comparisons.
How to use it:
Collect and arrange data. Collect the data and arrange it into an ordered set from lowest value to highest.
Calculate the depth of the median. d(M) = n+1 2
ASSIGNMENT
ON
BOX PLOT
COURSE CODE: URP1251
COURSE TITLE: STATISTICS FOR PLANNERS |
SUBMITTED BY MEHEDI MUDASSER 110412
SUBMISSION DATE: 09/05/2012 DISCUSSION OF BOX PLOT GRAPH WITH APPROPRIATE EXAMPLES The box plot goes back to John Tukey, which published in 1977 this efficient method to display robust statistics. Box plots, the term of graphical presentation of data. So it is one of the main parts of statistics because Statistics is the science of collecting, organizing, presenting, analyzing and interpreting data to assist in making more effective decisions.
Definition
The box plot is a graphical representation of data that shows a data set’s lowest value, highest value, median value, and the size of the first and third quartile. The box plot is useful in analyzing small data sets that do not lend themselves easily to histograms. Because of the small size of a box plot, it is easy to display and compare several box plots in a small space. A box plot is a good alternative or complement to a histogram and is usually better for showing several simultaneous comparisons.
How to use it:
Collect and arrange data. Collect the data and arrange it into an ordered set from lowest value to highest.
Calculate the depth of the median. d(M) = n+1 2
References: SAS/ STAT 9.2 User’s Guide; THE BOXPLOT PROCEDURE (Book Excerpt) Büchter, A. & Henn, H.-W. (2005). Elementare Stochastik. Eine Einführung in die Mathematik der Daten und des Zufalls. Berlin: Springer Verlag. Cuoco, A. A. &Curcio, F. R. (2001). The roles of representation in school mathematics: 2001 Yearbook. National Council of Teachers of Mathematics, Reston, Va., 2001. Tukey, J. W. (1977). "Box-and-Whisker Plots." §2C in: Exploratory Data Analysis. Reading, MA: Addison-Wesley, 39-43. WWW.Wikipidia.com