descriptive stats

what is descriptive statistics

analyse quantitative data to help descrive, show, or summarise it in a meaningful way

what are measures of central tendency

- median is the middle

- mean you add and divide

- mode occurs the most

- range is the difference between

what are measures of dispersion

range or standard deviation

- low scores are ideal for low range/deviation meaning less variation

what graphs do you need to know

- percentages

- bar charts

- histograms

- scattergrams

what are distributions

skewed when data points cluster more toward one side of the scale than the other creating an aysmmetrical curve

what are the types of distrubution

- normal

- positive

- negative