PPT-Year 9: Ratio & Proportion

Dr J Frost jfrosttiffinkingstonschuk wwwdrfrostmathscom Last modified 3 rd September 2015 The ratio of males to females at a party is 35 There are twelve more females than males How many people are at the party. What is significant for the athlete, the statistician and team doctor?. important. Will Hopkins . will@clear.net.nz sportsci.org/will. What is a Statistic?. Simple, effect, and inferential statistics.. Design Seminar. Proportion is…. Relationship of one part to another, or to the whole, or between one object and another. Defined in terms of magnitude (size), quantity, or degree. When is proportion noticeable?. Objectives. WHAT . is a population pyramid?. HOW. to read a population pyramid?. Recognise . SHAPES. . of population pyramids. . IMPORTANCE. of population pyramids.. What is a population pyramid?. Ratio . A ratio is the comparison of two numbers by division.. A classroom has 16 boys and 12 girls. . Also written as . 16 boys. , . 16:12 or 16 to 12. 12 girls. Generally, ratios are in lowest terms:. Jessica Johnson, Pharm. D.. TOPICS. Percent Concentrations. Ratio Concentrations. Determining # of tabs/caps needed to reformulate into a liquid. Recipes. Enlarging. Reducing. PERCENT CONCENTRATIONS. Ratios. Comparison of two items/objects. Written one of 3 ways. As a fraction. With : (colon). . using word “to”. When writing a ratio. First thing you talk about is the numerator. Second thing you talk about is the denominator. or obese? . 1. 1 in 3. 1 in 4. 1 in 5. 1 in 6 . Q1: What proportion of 4 – 5 year olds in London are overweight . or obese? . 2. 1 in 3. 1 in 4. 1 in 5. 1 in 6 . Rates of childhood obesity have increased considerably in recent years, and London now has higher rates of childhood obesity than other similar global cities. . zTest. Say that 10 times, fast.. Minor differences. Like with a 1-sample proportion . zTest. , we will use p instead of mu for our hypotheses.. Like a 2-sample . zTest. , we will have two things equal to one another rather than a parameter equal to a number.. When a problem states that variable X varies directly as variable Y, we know that the relationship implied is . . X = . kY. And that the first step in solving the problem is to find the value of the constant of proportionality k. . Definition. The . relationship . between objects, or parts, of a whole. . in artwork.. Scale (or size) . refers to the size of an object (a whole) in relationship to another object (another whole). In art the size relationship between an object and the human body is significant. In experiencing the scale of an artwork we tend to compare its size to the size of our own bodies. The ideal connection is shown in this illustration. EZCT/EZCT-2000 TURNS RATIO TEST. When the CT’s are mounted on the transformer primary windings, the user needs to install jumpers on the secondary windings to eliminate the Turns-Ratio reading errors. Inference for a Population Proportion Section 12.1 AP Registration Deadline: March 17 th Late Fee ($50): March 18 th – 24 th Financial Aid Application Due: March 1 st Remember Conditions for Inference Gender-based Indicators in Human Development Development Research IGIDR General Arun Kumar Vaidya Marg Goregaon E Mumbai-400065 INDIA Emails ment Measure are two gender-based indicators provided by t Prof.P.A.Navale. Dept. of Commerce. . Proportion. Meaning:. An equality of two ratios is called a Proportion. Four quantities are said to be in proportion if a: b = c: d (also written as a:b :: c:d)..