Analysis of Quantitative Data (Edexcel A-Level Psychology): Flashcards

Numerical information gathered through investigations

Calculations measuring central tendency & dispersion

x̄ = Σx/n (sum of scores ÷ number of scores)

Middle value when scores are arranged in order

Most frequently occurring value in a dataset

Highest value minus lowest value

Average distance of each value from the mean

68% of population

Tail points toward higher scores (most scored low)

Bar charts: separated; histograms: joined together