Aim: How do scientist organize their experimental information? They collect Data.

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Presentation transcript:

Aim: How do scientist organize their experimental information? They collect Data

Data Collection Data generally refers to the results of trials, or tests, completed during experiments. GenderAcceptPraiseRemediate/ProbeCriticize M F A data table is an important initial stage in making sense of the information you will collect while doing an experiment.

How can we organize this information? A data table makes organizing data easier to read and study

Data Tables IndependentDependent The independent variable ALWAYS is written in the LEFT column and the DEPENDENT variable in the RIGHT.

Procedure: 1)Half the students will measure their heart rate for 1 minute during rest and write it on a piece of paper. 2)Half the students will be instructed to complete 30 Jumping Jacks. 3)Those students who completed the Jumping Jacks will measure their heart rate for one minute and write it on a piece of paper.

Our Results: Students at rest HR Students after 30 JJ HR Group AGroup B AVG=

Let’s Graph!!!

Why do scientists utilize graphs? A carefully constructed graph can provide us with a large amount of information quickly. It also allows us to carefully analyze our results from an experiment.

Types of Graphs: Line Graph What is this graph telling us?

Types of Graphs: Pie Graph What is this graph telling us?

Types of Graphs: Bar Graph or Histogram What is this graph telling us?

Let’s Graph the Results from our Experiment: Y axis X Axis We will be making a bar graph from our results. We will graph the average heart rate for the control group and the experimental group.

Rules for Constructing Graphs: Rule 1: The dependent variable is plotted on the vertical, Y-Axis. Rule 2: The Independent Variable is plotted on the horizontal, X-Axis. Rule 3: The spacing between the numbers on both axes must be in equal increments.

Our Graph: Y X Independent Variable (Number of Jumping Jacks) Dependent Variable (Beats per minute) Control Group Experimental Group Legend The Effects of Exercise on Heart Rate

What are our results? Our results indicate that heart rate increased after the students performed 30 jumping jacks.

What is our conclusion? Was the hypothesis supported or rejected? This experiment supported our hypothesis. Physical exercise (Jumping Jacks) increases a person’s heart rate.