Maths

My Maths

Percent Error

|(measurement-Actual)/actual|

Percent Change

(new-old)/old

Markup

(sell-cost)/cost

∩

OR

U

AND

IQR

Q3-Q1

Q3

median of upper half

Q1

median of lower half

MAD

|every individual data point - mean|. Add all results together. Divide by number of data points.

Lower Outlier Fence

Q1 - (1.5 * IQR)

Higher Outlier Fence

Q3 + (1.5 * IQR)

Sum of Interior Angles

(number of sides - 2) × 180

Each Exterior Angle

360 / number of sides

π

Circumference / Diameter

Area of Circle

πr^2

Surface Area of Prisms

2 base + perimeter of base * height

Surface Area of Pyramids

base + 1/2 perimeter * slant height

Surface Area of Cylinders

2πr² + 2πr * height

Volume of Pyramids

(1/3) * base * height