Charts Graphs Data Charts Numerical quantitative data organized

Charts & Graphs

Data Charts • Numerical (quantitative) data organized in rows and columns • Can be used for Descriptive Investigations • Can be used for Experimental Investigations – The specific independent variables are listed • The number of trials are listed • Blanks are left for the data (dependent variable) to be filled in

Title Describing the Data Trial Variable 1 Variable 2 1 Each variable is listed 2 3 4 Each time the investigation is conducted is listed 5 Average The data is reduced This is a CHART Variable 3

Independent Variable This is a CHART Dependent Variable

Analyzing the data • Reduce the data – Do something to make the amount of data smaller • Central tendencies – – – Mean (average) – this is the most common in Earth Science Median Mode Range Frequency

Analyzing the data • Graph the data – Lets us see trends, patterns, relationships, comparisons – Bar graphs • Let us compare data – Line graphs • Lets us see trends or changes

This is a Bar Graph Amount of trash of different types Pieces of trash This shows a comparison of types and amount of trash on a beach. Dependent Variable Title DV vs IV Independent Variables Types of Trash Label

This is a another Bar Graph De pe nd wit ent h U Va NIT riab le S Title DV vs IV Independent Variables Label

This is a Line graph Title DV vs IV This shows how the grade point average has been changing over several years. The trend is an increase in GPA. Grade Point Average Dependent Variable Label Independent Variables Year

Dependent Variable with UNITS This is another Line Graph Independent Variables Label Title DV vs IV