OCR GCSE Psychology · J203

Descriptive Statistics

What you need to know

Calculate and interpret measures of central tendency, including the mode (and modal class), median, and mean.
Understand and calculate the range as a measure of dispersion.
Use ratios, percentages, and fractions to interpret data.
Recognize and use expressions in decimal and standard form.
Apply appropriate decimal places and significant figures to data.
Understand the characteristics of normal distributions.
Make estimations from collected data.