Tables and Graphs. Graphs: Visual Display of Data X Axis: Independent Variable Y Axis: Dependent Variable.

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Presentation transcript:

Tables and Graphs

Graphs: Visual Display of Data X Axis: Independent Variable Y Axis: Dependent Variable

Graph Info Always need a table first Title Label axis along with units of measurement Scale on axis must be of equal intervals One exception is the first interval

This graph does NOT start at zero, but each interval is still equal…

Types of graphs Bar Graph: Information collected by counting

Line Graph- Shows Trends The plotted points or dots represent data Use a best-fit line or curve to show the average of data

Circle (pie) Graph Shows how a quantity is broken into parts Sometimes percentage of a whole

Experimental Data: Parts of an Experiment Example Experiment: What type of cell phone company has the best coverage at Solon High School? 1. Variables A. Independent i. Variable of the experiment that is controlled by the experimenter ii. On the x-axis of a graph iii. Cell phone company

Experimental Data Cont’d B. Dependent i. Variable of the experiment that may change as a result of the independent variable being changed ii. What data is collected on iii. On the y-axis of the graph iv. How often you get reception (coverage) C. Constants i. Variables of the experiment that must not be changed so that the affect on the dependent variable can be observed (all of the other variables of the experiment) ii. Location, type of phone