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Histograms Hours slept Frequency 1 – 2.92 3 – 4.95 5 – 6.910 7 – 8.913 9 – 10.92
Titled Vertical Axis Shows Frequencies Be sure to clearly label axes with quantity measured and units (when appropriate) Starts at 0. Graphs that cut off some values can be misleading
Hours slept 1 – 2.9 3 – 4.9 5 – 6.9 7 – 8.9 9 – 10.9 Lower class limits used as class boundary 5.0 would be included in this bar
Relative Frequency Histogram
Bar Graph (alternate form of a histogram)
Ogive (Cumulative Frequency Polygon)
Stem and Leaf Plot (variant of histogram that shows all data) Stem (ones)Leaves (tenths) 12 29 315 4468 503347 637789 701224558 812256 93 101 Data: 1.2, 2.9, 3.1, 3.5, 4.1, 4.6, 4.8, 5.0, 5.3, 5.3, 5.4, 5.7, 6.3, 6.7, 6.7, 6.8, 6.9, 7.0, 7.1, 7.2, 7.2, 7.4, 7.5, 7.5, 7.8, 8.1, 8.2, 8.2, 8.5, 8.6, 9.3, 10.1
Pareto Chart For Qualitative data Can also be used for Nominal level data For Ordinal level data, you would want your horizontal axis in “order” Data groups are arranged in order of decreasing size
Scatterplot Pairs each value from data set to a value from a second data set to create points.
Homework 2-3: 1, 3, 5, 7
T-3 Histograms. Histogram Basics A histogram is a special type of bar graph that measures the frequency of data Horizontal axis: represents values in.
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Frequency Distributions and Graphs
B a c kn e x t h o m e Frequency Distributions frequency distribution A frequency distribution is a table used to organize data. The left column (called.
Histograms, Frequency Polygons, and Ogives (Cumulative Frequency Polygons) OBJ: Make a histogram, frequency polygon and ogive.
Psy302 Quantitative Methods
Unit 2 Section 2.1 – Day : Frequency Distributions and Their Graph Graphs are used to present data after it has been organized into frequency.
Graphing Data Unit 2. Graphs of Frequency Distributions Sometimes it is easier to identify patterns of a data set by looking at a graph of the frequency.
1 Probabilistic and Statistical Techniques Lecture 3 Dr. Nader Okasha.
Chapter 2 Presenting Data in Tables and Charts
Ch. 2: The Art of Presenting Data Data in raw form are usually not easy to use for decision making. Some type of organization is needed Table and Graph.
2-3. In addition to the histogram, the frequency polygon, and the ogive, several other types of graphs are often used in statistics. They are the bar.
Chapter 2 Frequency Distributions and Graphs 1 © McGraw-Hill, Bluman, 5 th ed, Chapter 2.
Unit 2 Section : Histograms, Frequency Polygons, and Ogives Graphs are used to present data after it has been organized into frequency distributions.
Graphical Displays of Data Section 2.2. Objectives Create and interpret the basic types of graphs used to display data.
How to build graphs, charts and plots. For Categorical data If the data is nominal, then: Few values: Pie Chart Many Values: Pareto Chart (order of bars.
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