Analysing Attitudes WK 5 Quantitative Thinking 0.0 / 5 ? PsychologyVisual SystemUniversityAll boards Created by: bluepanda19Created on: 13-12-18 11:09 Mean Sum of all the values, divided by the number of values 1 of 10 What is the formula for the mean? Mean(X) = Sum(X) / N 2 of 10 What are the main measures of central tendency? Mean, median & mode 3 of 10 What are the disadvantages of the mode? Can be misleading & not useful with continuous data 4 of 10 Why is variance important? Represents uncertainty by measuring how far the data are spread around the mean 5 of 10 What is a fundamental error in statistics? Only focusing on central measures & ignoring variance 6 of 10 Variance Mean of the squared distribution around the mean 7 of 10 What is the formula of the variance? Var(X) = Sum((X - Mean(X))^2) / N 8 of 10 Standard deviation Square root of the variance 9 of 10 Covariance Measure of how much two random variables vary together 10 of 10
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