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Key statisetical terms - Coggle Diagram
Key statisetical terms
statistical testing
tests to work out the relationships between results
sign test
calculates difference between groups of data
test of correlation
Tests working on the relaionships between results eg strong or weak
significance
Decides whether results are genuine or chance
calculated value
Results from the statistical test
Null hypothesis
No relationship- opposite to the hypothesis
Type 1 error
A false positive so you accept the experiment al hypothesis wrongly
one-tailed
This is also known as a directional hypothesis (positive or negative)
Levels of measurement
Ways that variables can be measured
Test of difference
Is there a difference in the results
experimental design
the way that the experiment is set up
Probability
the likelihood of a result occuring
critical value
Numerical value used to decide wether results are significant
Type 2 error
A false negative where you wrongly accept the null hypothesis
degrees of freedom
Two-tailed
THis is also known as a non-directional hypothesis (no comment is made)