Representing Data and Data Distribution
Data Distribution
![Picture](/uploads/1/6/6/0/16603678/450530924.gif)
1) Calculating MEAN, explanation and practice: http://www.mathsisfun.com/mean.html
2) The Mean Machine: http://www.mathsisfun.com/data/mean-machine.html
3) Calculating MEDIAN, explanation and practice: http://www.mathsisfun.com/median.html
4) Calculating MODE, explanation and practice: http://www.mathsisfun.com/mode.html
5) Mean, median, and mode, Video: http://www.youtube.com/watch?v=F6zcGSY15Vw
6) Relative Frequency: http://www.mathsisfun.com/data/relative-frequency.html
2) The Mean Machine: http://www.mathsisfun.com/data/mean-machine.html
3) Calculating MEDIAN, explanation and practice: http://www.mathsisfun.com/median.html
4) Calculating MODE, explanation and practice: http://www.mathsisfun.com/mode.html
5) Mean, median, and mode, Video: http://www.youtube.com/watch?v=F6zcGSY15Vw
6) Relative Frequency: http://www.mathsisfun.com/data/relative-frequency.html
Representing Data
![Picture](/uploads/1/6/6/0/16603678/710505373.gif)
1) Stem and Leaf Plots: http://www.mathsisfun.com/data/stem-leaf-plots.html
2) Histograms: http://www.mathsisfun.com/data/histograms.html
3) How to make a frequency table, video: http://www.virtualnerd.com/middle-math/probability-statistics/frequency-tables-line-plots/practice-make-frequency-table
4) Creating a frequency table, basic practice: http://www.ixl.com/math/grade-6/create-frequency-tables
5) Box plots (Box and Whiskers), explanation: http://www.purplemath.com/modules/boxwhisk.htm
6) Box plots (Box and Whiskers), Video: https://www.khanacademy.org/math/probability/descriptive-statistics/Box-and-whisker%20plots/v/box-and-whisker-plots 7) Scatter plots: http://www.mathsisfun.com/data/scatter-xy-plots.html
2) Histograms: http://www.mathsisfun.com/data/histograms.html
3) How to make a frequency table, video: http://www.virtualnerd.com/middle-math/probability-statistics/frequency-tables-line-plots/practice-make-frequency-table
4) Creating a frequency table, basic practice: http://www.ixl.com/math/grade-6/create-frequency-tables
5) Box plots (Box and Whiskers), explanation: http://www.purplemath.com/modules/boxwhisk.htm
6) Box plots (Box and Whiskers), Video: https://www.khanacademy.org/math/probability/descriptive-statistics/Box-and-whisker%20plots/v/box-and-whisker-plots 7) Scatter plots: http://www.mathsisfun.com/data/scatter-xy-plots.html
Skewed Data
1) Quick explanation with graphs: http://www.mathsisfun.com/data/skewness.html
2) More thorough explanation with graphs: http://www.cvgs.k12.va.us:81/DIGSTATS/main/descriptv/d_skewd.html
2) More thorough explanation with graphs: http://www.cvgs.k12.va.us:81/DIGSTATS/main/descriptv/d_skewd.html
Skewed to the right; positive skew. Notice that the Mean is larger than the Median.
Graph from: http://www.cvgs.k12.va.us:81/DIGSTATS/main/descriptv/d_skewd.html
Graph from: http://www.cvgs.k12.va.us:81/DIGSTATS/main/descriptv/d_skewd.html
Skewed to the left; negative skew. Notice that the Mean is less than the Median.
Graph from: http://www.cvgs.k12.va.us:81/DIGSTATS/main/descriptv/d_skewd.html
Graph from: http://www.cvgs.k12.va.us:81/DIGSTATS/main/descriptv/d_skewd.html