# Beta Distribution

**Beta Statistical Distribution**

**General Characteristics**

- The Beta distribution curve can take a variety of shapes; asymmetrical shapes, symmetrical half circle and/or inverted or cup-up half circle.

**Specific Characteristics**

**Key Measures:**

Shape1 (S1), Shape2 (S2)

**Range of values:**

0 < x < 1

**Mean:**

Mean = (Shape1) / (Shape1 + Shape2)

Mean = S1 / (S1 + S2)

**Standard Deviation, SD:**

SD = √[(S1 * S2) / ((S1 + S2)² * (S1 + S2 + 1))]

**Application**

Beta distributions can be used; to calculate the time required to complete a task & as an approximation in the absence of data.

**Beta Statistical Distribution – Statistical Distributions**

**Education | thetqweb**