Mean = (Sum of all values) ÷ (Total number of values)

Median (odd number of values) = Middle value

Median (even number of values) = (Middle two values sum) ÷ 2

Mode = Most frequently occurring value in the dataset

Range = Largest value – Smallest value

Cumulative Frequency = Sum of all frequencies up to a certain point

Mean of n values = (x₁ + x₂ + … + xₙ) ÷ n

Mode (if two values have the highest frequency) = Dataset is bimodal

Mode (if no value repeats) = No mode

Cumulative Frequency Distribution = Running total of frequencies

Bar Graph = Used to compare different categories

Histogram = Used to show frequency distribution

Outlier = A value significantly different from others in the dataset