Q1 In a test given to 500 students‚ the average marks was 56 and the standard deviation was 20. Find (i) the number of students exceeding a score of 60. (ii) the number of students having marks between 50 and 70. (iii) the value of marks exceeded by the top 100 students. Answer-------- (i) number of students exceeding a score of 60=210 (ii) The number of students having marks between 50 and 70=188 (iii) The value of marks exceeded by the top 100 students=73 Q2. Following
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Random sample It is often not necessary to survey the entire population. Instead‚ you can select a random sample of people/or firms from the population and survey just them. You can then draw conclusions about how the entire population would respond based on the responses from this randomly selected group of people. This is exactly what political pollsters do - they ask a group of people a list of questions and based on their results‚ they draw conclusions about the population as a whole with
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STAT 110 INTRODUCTION TO DESCRIPTIVE STATISTICS Fall‚ 2006 Lecture Notes Joshua M. Tebbs Department of Statistics The University of South Carolina TABLE OF CONTENTS STAT 110‚ J. TEBBS Contents 1 Where Do Data Come From? 1 1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Individuals‚ variables‚ and data . . . . . . . . . . . . . . . . . . . . . . . 2 1.3 Observational studies . . . . . . . . . . . . . . . .
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Lab 9 Report: Exercise Physiology Introduction When the human body is put to work and undergoes any sort of activity‚ it requires more energy and resources in order to sustain this. The cells in muscles and organs must work faster‚ and thus require more energy to do so. The body compensates by increasing heart rate and respiration in order to increase the amount of oxygen entering‚ carbon dioxide leaving‚ and rate at which these gases are delivered to cells throughout the body. In this lab‚ we
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6.14 Show that for a sample of n = 39‚ the smallest and largest Z values are – 1.96 and + 1.96‚ and the middle (i.e.‚ 20th) Z value is 0.00. 6.19 The data in the file spending represent the per-capita spending‚ in thousands of dollars‚ for each state in 2004. Decide whether the data appear to be approximately normally distributed by A. Comparing data characteristics to theoretical properties. B. Constructing a normal probability plot. 7.1. For a population containing N=902 individuals what code number
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“There are so many different types of love. There is little kid love‚ teenage love‚ friendship love‚ family love‚ marriage love and parent to children love. All of these different types of love have similar meanings but have a little something different making them unique.” (Bartinelli). This statement is the perfect way to explain love. Even though “love” is a universal word that millions of people use to describe their strong feelings for another person‚ the interpretation of the word is unique
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QT -1 –POQ 511 Topic : A) Descriptive Statistics : A1. A bank recorded the age at which an individual first opened a Savings Bank Account and were as follows: 42 44 52 32 23 25 34 33 37 18 19 18 14 16 18 18 23 21 18 23 24 24 26 28 32 43 33 34 19 23 22 21 18 19 18 22 25 24 54 20 21 17 22 24 25 22 23 5 8 29 18 16 17 15 19 21 32 33 34 35 36 37 23 24 25 21 22 33 33 43 27 28 29 30 31 33 17 25 23 25 33 23 25 26
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Unit 29: Promote Creativity And Creative Learning In Young Children (CYPOP 7) 1) Understand the concepts of creativity and creative learning and how these affect all aspects of young children’s learning and development. 1.1) Analyse the differences between creative learning and creativity? Creative learning is about helping children develop problem solving skills and imaginative thinking. It is about giving the children opportunities to make connections and apply them. Creative learning can be
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Ratio | Industry benchmark ratio | Woolworths’ ratio | Brief Comment | Current Ratio | 1.2:1 | 0.80:1 | The current ratio ofWoolworth is considerablybelow industry average themovement from it is 33.33% (1.2-0.8)/1.2*100) Which is not really good for business | Liquid ratio | 0.7:1 | 0.34:1 | The Liquid ratio of Woolworth is considerably below industry average. The movement is 51.43 %. It is showed that the business may have problem in paying their debt.(0.7-0.34/0.7*100) | Gross Profit ratio
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1. “What is the life expectancy for Caucasian males that have survived 54 years?” The answer will almost certainly be larger than 72. I want an estimate “conditioned on” the fact that I have already lived 54 years. Life is dynamic. Things are constantly changing. However‚ too often decisions are based on static information. Bayes theorem takes advantage of dynamic information to give a better‚ more correct answer. Bayes Theorem is a mathematical representation that helps one to calculate conditional
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