Here are the returns on two stocks.
a. Calculate the variance and standard deviation of each stock. Which stock is riskier if held on its own?
b. Now calculate the returns in each month of a portfolio that invests an equal amount each month in the two stocks.
c. Is the variance more or less than halfway between the variance of the two individual stocks?

Miller company’s total sales are $171,000. the company’s direct labor cost is $20,520, which represents 30% of its total conversion cost and 40% of its total prime cost. its total selling and administrative expense is $25,650 and its only variable selling and administrative expense is a sales commission of 5% of sales. the company maintains no beginning or ending inventories and its manufacturing overhead costs are entirely fixed costs. required: 1. what is the total manufacturing overhead cost? 2. what is the total direct materials cost? 3. what is the total manufacturing cost? 4. what is the total variable selling and administrative cost? 5. what is the total variable cost? 6. what is the total fixed cost? 7. what is the total contribution margin?