The Shape and Spread of Data Box Plot: Identify Outliers and See Spread and Center Box Plot Cannot Show the shape for this we go to histograms and stem and leaf plot. The Shape and Spread of Data

Describing Distribution Skew Center and where most of the data appears Outliers Range Max and Min Uniform, bimodal, unimodal

Skewness: measures the lopsidedness of a distribution Perfect fair exam Exam was too easy Exam was too hard

Describing Distribution Skew Center and where most of the data appears Outliers Range Max and Min Uniform, bimodal, unimodal

Stem and Leaf Plot Can have decimals by using the key

Split stem and leaf plot

Back to back stem & leaf plot Can show two sets of data at once You do not have to have the same number of data points on each side of the plot. Key works for both

Back to back stem & leaf plot Heart Rates for two groups: Group 1: 115, 115, 117, 126, 127, 127, 128, ,128, 129, 129, 129, 129, 130, 134, 134, 136, 136, 140, 142, 144 Group 2: 125, 125, 126, 134, 136, 138, 138, 142, 143, 146, 146, 147, 148 , 148, 153, 155, 155, 157, 162, 164 Make a Back to back stem & leaf plot

What is the data telling you? Skew Center and where most of the data appears Outliers Range Max and Min Uniform, bimodal, unimodal