On 3 Nov 2003 at 11:10, John E wrote: For this data, boxplots will be more revealing than histograms. For comparing distributions, histograms is not all that great. A boxplot will show immediately:
- The spread (variance) is different between hospitals - Hospital C has many outliers - There seem to be a difference in means, but the assumptions for a standard ANOVA is not fulfilled. Kjetil Halvorsen > "R. Martin" <[EMAIL PROTECTED]> wrote in message > news:[EMAIL PROTECTED] > > John E wrote: > > > > > > Where can I information specifically on trends and patterns deduced from > > > histograms? I have to write a report based on this form of data and I'm > > > unsure of exactly what to do. > > > > To get an answer I think you need to define what you mean by "trends > > and patterns". Histograms collapse all the temporal information and > > so trends can not be discerned from a histogram. A series of > > histograms plotted from data obtained at different times will show > > trends in how the histogram changes, if that is what you are referring > > to. > > Yes I think it is. Here is a sample of the data I have to use in CSV format. > Is there anything that stands out in this data that you think I should > comment on - particularly in relation to a histogram? > > Hospital A,Hospital B,Hospital C > 3.70,4.85,2.66 > 2.72,4.36,1.52 > 4.24,5.12,3.64 > 5.28,5.64,6.59 > 5.20,5.60,6.30 > 5.73,5.87,8.58 > 1.82,3.91,0.90 > 3.77,4.88,2.76 > 5.10,5.55,5.94 > 2.91,4.46,1.69 > 3.31,4.65,2.13 > 2.31,4.15,1.20 > 2.15,4.08,1.09 > 3.02,4.51,1.80 > 3.23,4.61,2.03 > 1.88,3.94,0.93 > 3.43,4.72,2.28 > 3.60,4.80,2.51 > 4.13,5.07,3.42 > 3.63,4.82,2.56 > 3.67,4.84,2.62 > 3.63,4.81,2.56 > 5.34,5.67,6.85 > 3.91,4.96,3.01 > 3.81,4.91,2.84 > 3.49,4.74,2.35 > 5.97,5.99,9.84 > 4.87,5.43,5.20 > 6.38,6.19,12.41 > 3.35,4.67,2.17 > 5.66,5.83,8.23 > 2.39,4.19,1.25 > 4.54,5.27,4.31 > 4.90,5.45,5.32 > 5.92,5.96,9.54 > 3.92,4.96,3.01 > 3.48,4.74,2.34 > 4.68,5.34,4.66 > 3.62,4.81,2.54 > 4.76,5.38,4.89 > 2.56,4.28,1.38 > 3.15,4.58,1.94 > 2.48,4.24,1.32 > 3.64,4.82,2.57 > 3.97,4.98,3.10 > 4.03,5.01,3.21 > 3.68,4.84,2.63 > 6.19,6.10,11.18 > 2.26,4.13,1.16 > 3.26,4.63,2.07 > 1.42,3.71,0.72 > 5.45,5.72,7.28 > 2.72,4.36,1.51 > 3.35,4.67,2.17 > 4.76,5.38,4.89 > 4.47,5.23,4.14 > 4.87,5.44,5.23 > 4.60,5.30,4.46 > 2.63,4.31,1.44 > 2.88,4.44,1.66 > 4.69,5.35,4.72 > 4.32,5.16,3.81 > 3.06,4.53,1.84 > 3.76,4.88,2.75 > 4.13,5.07,3.41 > 4.56,5.28,4.36 > 4.14,5.07,3.43 > 3.09,4.54,1.87 > 5.88,5.94,9.36 > 4.49,5.24,4.19 > 4.07,5.04,3.30 > 4.83,5.41,5.10 > 4.86,5.43,5.19 > 3.36,4.68,2.19 > 3.08,4.54,1.86 > 5.11,5.56,6.00 > 2.80,4.40,1.58 > 2.44,4.22,1.29 > 4.71,5.36,4.76 > 4.64,5.32,4.57 > 6.21,6.10,11.26 > 5.44,5.72,7.26 > 5.30,5.65,6.70 > 4.11,5.06,3.37 > 4.00,5.00,3.17 > 4.45,5.23,4.11 > 3.97,4.99,3.12 > 2.95,4.47,1.72 > 2.23,4.11,1.14 > 4.83,5.41,5.09 > 4.44,5.22,4.08 > 4.62,5.31,4.51 > 4.21,5.11,3.58 > 2.97,4.49,1.75 > 5.24,5.62,6.45 > 3.69,4.84,2.64 > 3.16,4.58,1.95 > 3.18,4.59,1.97 > 3.57,4.79,2.47 > 3.55,4.77,2.44 > 3.48,4.74,2.34 > 4.85,5.42,5.16 > 4.51,5.26,4.25 > 3.39,4.70,2.23 > 5.30,5.65,6.70 > 2.24,4.12,1.15 > 4.55,5.28,4.34 > 3.88,4.94,2.96 > 4.04,5.02,3.24 > 3.35,4.67,2.17 > 3.45,4.73,2.30 > 4.85,5.42,5.16 > 4.80,5.40,5.02 > 4.46,5.23,4.11 > 4.69,5.35,4.71 > 5.63,5.82,8.08 > 4.30,5.15,3.77 > 4.59,5.29,4.44 > 5.85,5.93,9.19 > 3.66,4.83,2.61 > 5.04,5.52,5.75 > 4.14,5.07,3.43 > 5.14,5.57,6.10 > 3.85,4.93,2.90 > 3.22,4.61,2.02 > 5.08,5.54,5.87 > 3.42,4.71,2.26 > 4.53,5.27,4.30 > 4.55,5.27,4.33 > 3.68,4.84,2.64 > 3.56,4.78,2.45 > 2.63,4.32,1.44 > 5.99,6.00,9.96 > 3.43,4.72,2.28 > 4.09,5.04,3.32 > 3.77,4.88,2.76 > 6.84,6.42,16.17 > 5.25,5.63,6.50 > 4.88,5.44,5.25 > 5.33,5.67,6.81 > 4.19,5.09,3.52 > 4.54,5.27,4.32 > 3.75,4.88,2.74 > 2.78,4.39,1.57 > 5.27,5.63,6.56 > 3.71,4.86,2.68 > 2.69,4.35,1.49 > 4.76,5.38,4.91 > 4.78,5.39,4.97 > 4.43,5.21,4.05 > 4.40,5.20,3.99 > 3.35,4.68,2.18 > 4.72,5.36,4.79 > 4.53,5.26,4.28 > 5.08,5.54,5.87 > 1.23,3.62,0.64 > 4.46,5.23,4.13 > 5.47,5.73,7.36 > 2.28,4.14,1.17 > 4.05,5.02,3.25 > 5.35,5.68,6.89 > 5.69,5.84,8.36 > 4.24,5.12,3.63 > 4.15,5.07,3.44 > 5.85,5.93,9.20 > 3.96,4.98,3.09 > 3.34,4.67,2.17 > 4.91,5.45,5.33 > 3.99,5.00,3.14 > 5.04,5.52,5.75 > 4.43,5.22,4.06 > 5.45,5.73,7.30 > 3.88,4.94,2.95 > 3.04,4.52,1.82 > 2.46,4.23,1.30 > 1.43,3.72,0.72 > 4.10,5.05,3.36 > 4.30,5.15,3.76 > 3.98,4.99,3.13 > 4.20,5.10,3.55 > 4.26,5.13,3.67 > 5.48,5.74,7.40 > 4.09,5.04,3.32 > 2.88,4.44,1.66 > 2.61,4.31,1.42 > 4.19,5.10,3.53 > 4.95,5.48,5.47 > 2.49,4.25,1.33 > 3.39,4.70,2.23 > 4.52,5.26,4.27 > 3.78,4.89,2.79 > 3.66,4.83,2.59 > 3.84,4.92,2.88 > 3.56,4.78,2.46 > 3.20,4.60,1.99 > 4.64,5.32,4.58 > 4.06,5.03,3.27 > 5.26,5.63,6.54 > 4.26,5.13,3.68 > 4.06,5.03,3.27 > > > . > . > ================================================================= > Instructions for joining and leaving this list, remarks about the > problem of INAPPROPRIATE MESSAGES, and archives are available at: > . http://jse.stat.ncsu.edu/ . > ================================================================= . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
