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How science works

First go on prezi, hope its ok

Luke Deamer

on 24 November 2012

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Transcript of How science works

By Luke Deamer By Luke Deamer How Science Works -Plot the graphs

-Draw line of best fit if possible

-Evaluate methodology and validity of results - precision, accuracy, reliability -Correlation does not prove causation

-Ensure all errors have been mitigated

-Work is always still open to scrutiny from outside sources Precision -Use smaller increments on measuring equipment
(where appropriate)

-Reduces percentage error

error/ value= +/- maximum error Plotting graphs -If both independent and dependent are continous
data, use a dot plot line graph
-If one or more of variables is catagoric, use a bar chart
-If independent variables can not be interconnected, seperate out bar's from one another Examples:
-Placebo use (control group)
-Double blind trial
-Ensuring all are treated the same
-Large samples to mitigate
anomalous results

- allows for chance in statistical
tests Random science notes Make this something about biology ;-) Hi Ms Clark/ Mr Kent Brainstorming Results Realisation Controls With Experiments:

- Variables


-Evaluation Accuracy Get another body to do same test independently
and compare results

Do test in a different way and compare the results Variables independent dependent control Evaluation value for each measured change in the independent variable variable changed by investigator control variables - must be kept constant for all tests in experiment -if not kept constant, will effect/ bias the results of the experiment -errors resulting from a failure to control certain variables can be noted as:
-systematic errors
-zero errors
(-random errors) How could test have been improved:

all equate to validity of results -Present data (graph)

-Any correlation between independent and dependent variable.

-How do results fit hypothesis Reliability Repeat tests atleast 3+ times
and work out average
(usually mean average)

redo any anomalous results
Full transcript