Wednesday, 22 April 2015

Probability and significance



Today we started the statistics section of the research method spec with a look at probability and significance (ppt here). Remember we always start off with a null hypothesis, with the aim being to try and disprove this and find something significant. If the probability of getting our results when the null hypothesis is true, is less than or equal to 0.05 then we say we have a significant finding and our null hypothesis can be rejected.

We then looked at our first statistical test, Spearman's rho. This is used when the data is from a correlation and when the data is ordinal or nominal. The ppt is here and the worksheets to fill in and work through are here and here

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