Statistical Analysis 2.0 / 5 based on 1 rating ? BiologyInternational BaccalaureateAll boards Created by: Claudia BannatyneCreated on: 17-04-13 19:37 What is the purpose of standard deviation? Standard deviation is used to assess how far spread values are above and below the mean. 1 of 5 How is the mean calculated? The mean is calculated by dividing the sum of the values by the number of values. 2 of 5 What is the t-test? The t-test is used to find out whether there is a significant difference between 2 values. 3 of 5 When is a difference between two values significant? A difference is statistically significant if the probability of it being due to random variation is 5% or less. 4 of 5 Is a correlation always proof of cause? No 5 of 5
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