Calculate standard deviation, probable error, and error of the mean for surveying and civil measurements. Switch between imperial and metric units. Perform calculations for series of observations and single or combined accidental errors.
Calculate tips and checks with precise itemized breakdowns. Assign items to specific group sizes and adjust contributions instantly. Customize calculations with built-in state and city tax data.
Perform arithmetic with fractions, mixed numbers, and whole numbers. Execute addition, subtraction, multiplication, and division. Automatically simplify results to lowest terms. Display mixed fractions. View and reuse calculation history.
