13. Variance and Standard Deviation (expected). Using the data from problem 13‚ calculate the variance and standard deviation of the three investments‚ stock‚ corporate bond‚ and government bond. If the estimates for both the probabilities of the economy and the returns in each state of the economy are correct‚ which investment would you choose considering both risk and return? Why? ANSWER Variance of Stock = 0.10 x (0.25 – 0.033)2 + 0.15 x (0.12 – 0.033)2 + 0.50 x (0.04 – 0.033)2 + 0
Premium Variance Probability theory Standard deviation
tar per cigarette and a standard deviation equal to 1.0 milligram. Suppose a sample of 100 low-tar cigarettes is randomly selected from a day’s production and the tar content is measured in each. Assuming that the tobacco company’s claim is true‚ what is the probability that the mean tar content of the sample is greater than 4.15 milligrams? [0.00621] 2. The safety limit of a crane is known to be 32 tons. The mean weight and the standard deviation of a large number of iron rods are
Premium Standard deviation Normal distribution Probability theory
precision can be made using the results. Precision refers to how close a set of results are to each other. In this lab‚ the percent relative average deviation can be used as an indicator of preciseness. Percent relative average deviation is a measure of how tightly clustered a set of data points is around a mean. A low percent relative average deviation indicates that the data points are tightly clustered around the mean; moreover‚ if the
Premium Measurement Test method Accuracy and precision
learning - Aware of their cosmic task - Complete and successful assessment - NB! Can only attain full Montessori curriculum if the child completes the full 3 year cycle. POLICY: At Great Expectations Montessori School‚ though out the learners pre-primary 3-6 year old cycle‚ the child will be exposed to all learning areas within the Montessori curriculum. By working through the Montessori curriculum in its entirety‚ each learner will be exposed to learning areas that will develop the child
Premium Mathematics Science Game theory
CHILD DEVELOPMENT ESSAY Sensitive Mothering is essential to the social and emotional development of the child. Discuss this statement in the context of relevant development theory. • Explain what is meant by the term Sensitive Mothering. Explain why sensitive mothering is important in building a positive emotional base. • Link this explanation to Bowlby’s attachment theory and Ainsworth’s studies. You will need to show an understanding of the internal working model of attachment and how
Premium Attachment theory
develop naturally. She believed that every child held the ability to learn but only needed to be shown or guided on how to correctly do so. The teachers role in the class room is to cater for these needs. Montessori believed that only a certain type of person suited the role of a Montessori teacher “The teacher must derive not only the capacity‚ but the desire‚ to observe natural phenomena. In our system‚ she must become a passive‚ much more than an active‚ influence‚ and her passivity shall be
Premium Maria Montessori Natural environment Teacher
The Montessori Method: A Rhetorical Analysis Maria Montessori graduated in 1894 from the University of Rome’s medical school‚ becoming Italy’s first female doctor. This was a feat that reinforced Montessori’s commitment to women’s rights. Living in the 20th century‚ Montessori noticed society’s use of science as an approach to improving education. She believed these strategies were scientifically irrelevant to the teaching of students. In her writing “The Montessori Method”‚ Maria Montessori
Premium Education Pedagogy Analogy
Montessori Philosophy: The Planes of Development Most people’s idea of how children grow and develop is a steady continuous movement along a path from point A ’’ birth‚ to point B ’’ adulthood. Maria Montessori’s philosophy on how humans learn differs in that she believed learning for children and youth occurred as a series of waves or cycles. After years of observation‚ Montessori concluded there are four distinct planes of development that everyone must pass through on their way to
Premium Learning Montessori method Developmental psychology
video (Bazelon). Maria Montessori‚ one of Italy’s first female physicians‚ began with a premise that kids can teach themselves if they are working within a strong framework (Bazelon). While educators sought ways to confine children in place while data was pumped into their minds‚ Maria Montessori’s revolution set the child free. Born in 1870‚ Maria Montessori assailed the male-dominated educational system‚ and became a physician (Povell). Perhaps‚ the challenges Montessori endured formed the basis
Premium Education School
decreases by -0.347 average number of hours per week. Next‚ we have to interpret the random error component ( ) of the least squares line. The estimate of error standard deviation for this particular data set is 12.28455 which suggests that the work-life balance score (y) values should be two times of the standard deviation. This can be best expressed as in the equation of 2s = 2(12.28455) which equals 24.57 average hours per week. Then‚ we can analyze the accuracy of hypothesis model to see
Premium Statistics Regression analysis Economics