Stem and Leaf Plots OBJ: To display a set of data using a stem-and-leaf plot and to find the mean, median, and mode.

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Stem and Leaf Plots OBJ: To display a set of data using a stem-and-leaf plot and to find the mean, median, and mode

Shown below are the mathematics scores for the 50 seniors in a Midwestern high school who took a standardized achievement test

In a stem-and-leaf plot the first digit of each score is called the stem and the second digit is called the leaf. All the leaves for a given stem are written one after the other. Make a stem-and-leaf plot to the right with the scores recorded by column.

Unorganized Stem and Leaf

Stem Leaf

Make a second stem-and-leaf plot to the right with the scores rearranged in increasing order.

Stem Leaves 3|2 represents a score of

DEF: mean The sum of the data divided by the total number of data items (average) 27,

DEF: median The middle number of the data when it is arranged in numerical order, or the average of the two middle numbers if there is an even number of data items

DEF: mode Data item that occurs the most 510

The 12 National League baseball teams had shutouts for one season as shown below: TeamShutouts Atlanta4 Chicago10 Cincinnati13 Houston15 Los Angeles24 Montreal12 New York22 Philadelphia6 Pittsburgh11 St. Louis14 San Diego9 San Francisco 13 a. Sum– marize thedatainastem leaf and plot StemLeaf 0 1 2

The 12 National League baseball teams had shutouts for one season as shown below: TeamShutouts Atlanta4 Chicago10 Cincinnati13 Houston15 Los Angeles24 Montreal12 New York22 Philadelphia6 Pittsburgh11 St. Louis14 San Diego9 San Francisco 13 a. Sum– marize thedatainastem leaf and plot StemLeaf

The 12 National League baseball teams had shutouts for one season as shown below: TeamShutouts Atlanta4 Chicago10 Cincinnati13 Houston15 Los Angeles24 Montreal12 New York22 Philadelphia6 Pittsburgh11 St. Louis14 San Diego9 San Francisco 13 a. Sum– marize thedatainastem leaf and plot StemLeaf

b. Find the mean, median, and mode = 153 Mean = = Median = = 12.5 Mode = 13 All homework in Advanced Math Book HW 1 P (1-8)