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Study Guide 2.4-2.5

frequncy polygon Uses line segemnts connected to points directly above class midpoint values Ex. ./'\-.-./'
Relative frequncy polygon Uses relative freqincies ( proportions or percentages) for the vertical scale
Ogive A line graph that depicts cumulative frequncies
Dot plot Consists of a graph in which each each data value is plotted as a point ( or dot) along a scale of values. Dots reprsenting equal values are stacked
Steamplot(Steam-and-Leaf plot) represents quantitative data by seperating each value into two parts: the stem( such as the leftmost digit 60=6) and the leaf( such as the right most digit 64=4 or 159=9)
bar graph uses bars of equal width to show frequncies of categories of qualitative data. Vertical scale represents frequncies or relative frequncies. Horizontal scale identifies the different categories of qualitative data.
multiple bar graph has two or more sets of bars and is used to compare two or data sets. ex: Ii Ii Ii
Pareto Chart a bar graph for qualitative data, with the bars arranged in descending ordeer according to frequncies ex:li:.
Pie chart a graph depicting qualittative data as slices of a circle is proportional to frequency count.
Scatter plot( or scatter diagram) A plot of paired (x,y) data with a horizontal x-axis and a vertical y-axis. Used to determine whether there is a relationship between the two variables
time-series graph data that have been collected at different points in time
Nonzero axis misleading because one or both of the axes begin at some value other than zero, so that the differences are exaggerated
Created by: jking009