Graphs are considered a ; devices that help the practitioner or experimenter interpret the results of a study or treatment.
Judgmental aid

Stocks a, b, and c are similar in some respects: each has an expected return of 10% and a standard deviation of 25%. stocks a and b have returns that are independent of one another; i.e., their correlation coefficient, r, equals zero. stocks a and c have returns that are negatively correlated with one another; i.e., r is less than 0. portfolio ab is a portfolio with half of its money invested in stock a and half in stock b. portfolio ac is a portfolio with half of its money invested in stock a and half invested in stock c. which of the following statements is correct? a. portfolio ab has a standard deviation that is greater than 25%.b. portfolio ac has an expected return that is less than 10%.c. portfolio ac has a standard deviation that is less than 25%.d. portfolio ab has a standard deviation that is equal to 25%.e. portfolio ac has an expected return that is greater than 25%.

Shawn received an e-mail offering a great deal on music, movie, and game downloads. he has never heard of the company, and the e-mail address and company name do not match. what should shawn do?

Aproduction department's output for the most recent month consisted of 8,000 units completed and transferred to the next stage of production and 5,000 units in ending work in process inventory. the units in ending work in process inventory were 50% complete with respect to both direct materials and conversion costs. calculate the equivalent units of production for the month, assuming the company uses the weighted average method.