Standard deviation

between the creative organizational climate of schools and the creativity development of children from 10 to 16 years old” (p. 27). The authors use mean and standard deviation (SD) for the ages of the teachers and students in the study. The mean for teachers was 26.57 and the SD was 7.38. For the students, the mean was 12.81 with a standard deviation of 1.72 (Yi et el., 2013, p. 27). When the authors were going over the Creative Organizational Climate

similar annualized returns, the ride along the way can be significantly different. One portfolio may have a higher standard deviation, reflecting more ups and downs while the other portfolio could have a lower standard deviation, indicating a smoother ride. 3. What characteristics of the two return distributions makes risk reduction possible? Standard deviation and coefficient of variation are measures of dispersion about the mean, and hence measure total risk. Total risk

The vice versa holds true as well, less risk corresponds to a lower return. One way to measure risk is through calculating the standard deviation of returns. This measurement tells an investor how volatile or risky an investment is, by providing the investor with a range of possible outcomes based on the stocks expected return. Therefore, the lower the standard deviation percentage the less risk a given investment has. Moreover, when risk is being analyzed for more than one investment in a portfolio

mean| c.|random variation| d.|standard error| ANS: B 23. The expected value of the random variable is a.|the standard error| b.|the sample size| c.|the size of the population| d.|None of these alternatives is correct.| ANS: D 24. The standard deviation of all possible values is called the a.|standard error of proportion| b.|standard error of the mean| c.|mean deviation| d.|central variation| ANS: B 25. A population has a mean of 75 and a standard deviation of 8. A random sample of 800

order to generate standard deviation, mean, median, mode, frequency, as well as variation of length, diameter, volume, and cross sectional area of the

portfolios can have similar annualized returns, the ride along the way can be significantly different. One portfolio may have a higher standard deviation, reflecting more ups and downs while the other portfolio could have a lower standard deviation, indicating a smoother ride. 3. What characteristics of the two return distributions makes risk reduction possible? Standard deviation and coefficient of variation are measures of dispersion about the mean, and hence measure total risk. Total risk is the relevant

Name___________________________________ Provide an appropriate response. 1) Two random variables are normally distributed with the same mean. One has a standard deviation of 10 while the other has a standard deviation of 15. How will the graphs of the two variables differ and how will they be alike? 2) Which is larger, the area under the standard normal curve between -1 and 1, or the area under the standard normal curve between 0 and 2? Explain your reasoning. 3) Which of the variables below do you think will be roughly

large company standard deviation: 24,11 t bills standard deviation: 1,23 c. -14.69-7.29) + (-26.47-7.99) + (37.23 – 5.87) + (23.93 – 5.07) + (-7.16 – 5.45) + (6.57- 7.64) = -19.9% Arithmetic average risk premium: -19.90/6= -3.32% Standard deviation of the risk premium: 24.91 6. Systematic versus Unsystematic Risk Indicate whether the following events might cause stocks

higher standard deviation and the higher variance. If we compare both stocks, Reynolds is riskier than Hasbro in this case. The higher variance indicates higher chance that the actual return on Reynolds will deviate from the expected return.   S&P 500 REYNOLDS HASBRO Mean/Average 0.574333 1.874833 1.183833 Variance 12.972333 87.730541 65.866763 Standard Deviation 3.601713 9.366458 8.115834 Answer 2. At individual stock level, Reynolds fluctuates more than Hasboro as it has higher Standard Deviation

Introduction: The focus of my coursework is to find out whether the age of a person impacts on the reading speed or if gender affects the reading speed of a person. I am going to carry out this research in order to prove or disprove these hypotheses: • The older the person is the faster the person is to read a page as he/she is more experienced at reading and understand more sophisticated vocabulary than younger age groups. • Girls are faster at reading than boys are as girls hobbies differ from