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Section Exercises
Stem-and-Leaf Graphs (Stemplots), Line Graphs, and Bar Graphs
For each of the following data sets, create a stem plot and identify any outliers.
1. The miles per gallon rating for [latex]30[/latex] cars are shown below (lowest to highest). [latex]19[/latex], [latex]19[/latex], [latex]19[/latex], [latex]20[/latex], [latex]21[/latex], [latex]21[/latex], [latex]25[/latex], [latex]25[/latex], [latex]25[/latex], [latex]26[/latex], [latex]26[/latex], [latex]28[/latex], [latex]29[/latex], [latex]31[/latex], [latex]31[/latex], [latex]32[/latex], [latex]32[/latex], [latex]33[/latex], [latex]34[/latex], [latex]35[/latex], [latex]36[/latex], [latex]37[/latex], [latex]37[/latex], [latex]38[/latex], [latex]38[/latex], [latex]38[/latex], [latex]38[/latex], [latex]41[/latex], [latex]43[/latex], [latex]43[/latex]
2. The height in feet of [latex]25[/latex] trees is shown below (lowest to highest). [latex]25[/latex], [latex]27[/latex], [latex]33[/latex], [latex]34[/latex], [latex]34[/latex], [latex]34[/latex], [latex]35[/latex], [latex]37[/latex], [latex]37[/latex], [latex]38[/latex], [latex]39[/latex], [latex]39[/latex], [latex]39[/latex], [latex]40[/latex], [latex]41[/latex], [latex]45[/latex], [latex]46[/latex], [latex]47[/latex], [latex]49[/latex], [latex]50[/latex], [latex]50[/latex], [latex]53[/latex], [latex]53[/latex], [latex]54[/latex], [latex]54[/latex]
3. The data are the prices of different laptops at an electronics store. Round each value to the nearest ten. [latex]249[/latex], [latex]249[/latex], [latex]260[/latex], [latex]265[/latex], [latex]265[/latex], [latex]280[/latex], [latex]299[/latex], [latex]299[/latex], [latex]309[/latex], [latex]319[/latex], [latex]325[/latex], [latex]326[/latex], [latex]350[/latex], [latex]350[/latex], [latex]350[/latex], [latex]365[/latex], [latex]369[/latex], [latex]389[/latex], [latex]409[/latex], [latex]459[/latex], [latex]489[/latex], [latex]559[/latex], [latex]569[/latex], [latex]570[/latex], [latex]610[/latex]
4. The data are daily high temperatures in a town for one month. [latex]61[/latex], [latex]61[/latex], [latex]62[/latex], [latex]64[/latex], [latex]66[/latex], [latex]67[/latex], [latex]67[/latex], [latex]67[/latex], [latex]68[/latex], [latex]69[/latex], [latex]70[/latex], [latex]70[/latex], [latex]70[/latex], [latex]71[/latex], [latex]71[/latex], [latex]72[/latex], [latex]74[/latex], [latex]74[/latex], [latex]74[/latex], [latex]75[/latex], [latex]75[/latex], [latex]75[/latex], [latex]76[/latex], [latex]76[/latex], [latex]77[/latex], [latex]78[/latex], [latex]78[/latex], [latex]79[/latex], [latex]79[/latex], [latex]95[/latex]
For the next three exercises, use the data to construct a line graph.
5. In a survey, [latex]40[/latex] people were asked how many times they visited a store before making a major purchase. The results are shown in the table.
Number of times in store
Frequency
[