Lesson #19: Other Graphs— But What Type Are They?

 An ogive is a connected line graph which demonstrates the cumulative increase in value of the y-axis variable as the x-axis variable increases.  The y variable values are cumulative, adding to the previous values, until they reach the maximum possible value, or 100% (1.0).  Is this a qualitative graph or quantitative graph? How do you know?

 Graph which shows data collected at regular intervals (hourly, daily, monthly, yearly) in order to looks for trends.  X-axis represents time, Y-axis represents variable being measured (such as stock prices or unemployment rates).  What type of graph is this?

 A type of line graph which uses line segments connected to points located directly above class midpoint values.  This can be used for frequency or relative frequency graphs (shown on the y-axis).  Which type of graph is this?

 A Pareto chart is a bar graph which has its bars arranged from largest to smallest.  The y-axis will be labeled for frequencies or relative frequencies.  By arranging the bars in this manner, the bar(s) with the highest frequency get the most attention.  Which type of graph is this?

 Scatter plots are graphs of ordered pair (x, y) points which represent data which may (or may not) have a relationship.  Each axis represents a variable.  The scatter plot is usually judged by its strength of correlation (whether its points are close together) and the direction the points are facing.  What type of graph is this?

 Who can name all the qualitative graphs we’ve discussed in this chapter so far?  Bar Graph, Pareto Chart, Pictogram, Pie Chart  Who can name all the quantitative graphs we’ve discussed in this chapter so far?  Histogram, Stem Plot, Dot Plot, Time Series Plot, Ogive, Scatter Plot, Frequency Polygon, Line Graph