Research and Understand the Formula: Conduct research on the selected formula to gain a deeper understanding of its purpose, and usage. Consult textbooks and/or reliable online resources.

Prepare an Example: Create a hypothetical scenario or problem where the formula can be applied. Use realistic values for the variables and parameters to illustrate the formula's practical application.

Describe the Formula: Write a description of the formula, explaining its purpose and how it is used in real-world situations. Include examples, diagrams, or graphs if they help clarify your explanation.

Document and Submit: Prepare a well-organized document that includes your example, description, calculations, and interpretations.

17Var(R)=E[(RE[R])2]=RPR(RE[R])2 =RPRR