Finance investment discussions

1. Distinguish among the following risk measurement terms: beta, r-squared, covariance, and correlation coefficient 

2. Define the nature of probability distributions and the two types associated with them 

3. Discuss the importance of an investment advisor being able to explain to his or her client why a mutual fund characterized by a very low standard deviation could be riskier than a similar type fund with a higher absolute number 

4. Discuss the problem raised when calculating standard deviation using probability distributions 

Please submit reference(s) as well.