Professor Mumford mumford@purdue.edu Econ 360 - Fall 2012 Problem Set 1 Answers True/False (30 points) 1. FALSE If (ai ‚ bi ) : i = 1‚ 2‚ . . . ‚ n and (xi ‚ yi ) : i = 1‚ 2‚ · · · ‚ n are sets of n pairs of numbers‚ then: n n n (ai xi + bi yi ) = i=1 i=1 ai x i + i=1 bi yi 2. FALSE If xi : i = 1‚ 2‚ . . . ‚ n is a set of n numbers‚ then: n n n n n (xi − x) = ¯ i=1 n i=1 2 x2 i − 2¯ x i=1 xi + i=1 x = ¯ i=1 2 x2 − n¯2 x i where x = ¯ 1 n i=1 xi 3. TRUE If xi : i = 1‚ 2‚ . .
Premium Standard deviation Variance Random variable
Statement #3: The difference in IQ test scores between African Americans and non-Hispanic white Americans can be attributed almost entirely to different patterns of socialization and environmental factors. The history of the race and intelligence controversy concerns and focuses on the historical enlargement of a debate‚ mainly in the United States of America‚ with the indication to potential explanations of group differences in scores on intelligence tests or IQ tests. Also the correlation between
Premium United States Intelligence quotient Intelligence
experiences is defined as personality (Cloninger‚ 2007). By observing one’s behaviour casually‚ inferences about his personality cannot be made. An assessment of personality can only be determined from the results generated from a series of special tests that have been designed to identify particular personality characteristics (Martin‚ Carlson & Buskist‚ 2010). Assessing Children’s personality Studies have shown that most individuals are involved in various personality assessments all throughout
Premium Personality psychology Clinical psychology Psychology
as well as students should be evaluated solely by their performances on these tests. It also contains some useful statistics about tests scores. I can use the information from this source in the introduction. This would be useful in the introduction because it is just an overview of different viewpoint on the topic. I can also give some background info about my topic in this way. Walberg‚ Herbert J. "Standardized Tests Effectively Measure Student Achievement." Standardized Testing. Ed. Dedria Bryfonski
Premium Standardized test Psychometrics Objection
Finance 3715 Test 3 Practice Test 1. Which of the following will be constant for all securities if the market is efficient and securities are priced fairly? a. Reward-to-risk ratio b. Variance c. Beta d. Standard deviation e. Risk premium 2. Which one of the following statements best defines the efficient market hypothesis? a. Profits are removed as a market incentive when markets become efficient b. Mispriced securities are common in efficient markets c. All securities in an efficient
Premium Net present value Rate of return Internal rate of return
adolescents show the greatest changes. (3) Critical periods are the specific times when the development of certain characteristics is very sensitive to the interaction between physical and environmental influences. Feedback on question 2 The correct answer is alternative 3. Here it is important to keep the interactive nature of physical development and environmental influences in mind. Read the examples in your prescribed book (p. 18). After studying the discussion of critical or sensitive periods and
Premium Infant Developmental psychology Jean Piaget
The creation of this test gives a legal realist a greater sense of justification when viewing Legal Aboriginal issues. The Sparrow Test outlines a basic set of criteria to allow the government to decide if a right may be infringed upon. Before this was developed judges would have no comparison to relate to such issues‚ legal realist are committed to finding the gaps the law system presents. In regards to this‚ the Sparrow Test development is able to help legal adjudication
Premium First Nations Indigenous peoples Indigenous Australians
consists of four sections. The first section briefly explains the theoretical background of the test. Your personality profile is discussed in the second section based on your scores for the five personality traits of the Big Five theory. In the third section‚ whether combinations of the five personality traits result in additional key personality traits is reviewed. The last section explains the meaning of the test and how the results can be interpreted or used. 1.2 Theoretical background The list of
Free Personality psychology Big Five personality traits
Progress Test 2 I. Reading Read the text only once. Choose the right answer. In primary school a child’s life is simple. Children form a close relationship with one familiar teacher. On entering secondary school a new more difficult world opens up. Pupils soon learn to be less free in the way they speak to teachers and even to their classmates. They begin to lose the free and easy ways of primary school. As teachers of different subjects see hundreds of children in a week‚ a pupil may be able to
Free Primary education School High school
Specific Objective: Carry out test for reducing sugar‚ non reducing sugar‚ starch ‚ protein and lipid. BIOCHEMICAL TESTS Reducing and non-Reducing Sugars Sugars can be classified as either reducing or non-reducing based on their ability to reduce copper(II) ions to copper (I) ions during the Benedict’s Test. Reducing sugar have contain free aldehyde or ketone group and have the ability to reduce copper(II) ions to copper (I) ions during the Benedict’s Test. All monosaccharides are reducing
Premium Sucrose Benedict's reagent Glucose