PPT-7.2 Proportional Variation and Solving Proportions

Remember to Silence Your Cell Phone and Put It In Your Bag Proportional Variance Two quantities vary proportionally iff as their corresponding values increase or decrease the ratios of the two quantities are always equivalent. In this section we will be able to give real life examples of Fractions and Proportions. We will also learn how to solve and evaluate Fractions and Proportions in word problems.. Lesson plan goals. We are constantly using fractions everyday. Most of the time not really even noticing that we are using fractions. Have you ever checked the clock or a watch for the time? Guess what the time is a fraction of a day so any time you use a watch, clock. Process Excellence and The Inspirational Leader:. Enablers and Challenges. Jay Watson. Director, Process Excellence Development. PortsAmerica, Chandler, AZ. MA- Human Resources Development. BS – Business Administration. . & . Types of Variation. Rearranging formulas containing rational expressions. Variation. Variation. Inverse. Joint. Combined. 6.8. 1. Electronics:. “Solving” formulas for different variable. Ratios. A . ratio. is a comparison of . two. numbers.. Example: Tamara has 2 dogs and 8 fish. The ratio of dogs to fish can be written in three different ways. ..  .  . ***. Be careful with the . Many natural (physical) phenomena exhibit . variation. = one quantity (quantities) changing on account of another (or several) . Principle is some kind of dependence. What things can we think about that depend on another action/object? . Ratios. A . ratio. is a comparison of . two. numbers.. Example: Tamara has 2 dogs and 8 fish. The ratio of dogs to fish can be written in three different ways. ..  .  . ***. Be careful with the . 3/28/17. How do we write ratios?. How do we write and simplify rates?. How do we decide whether two ratios/rates are proportional?. Today We’ll Discuss. Definition:. The . ratio. of two numbers . Page 163. #1) Are the ratios proportional?.  . Cross multiply..  .  .  . YES. #2) Are the ratios proportional?.  . Cross multiply..  .  .  . YES. #5) A bubble solution can be made with a ratio of 1 part detergent to 8 parts water. Would a mixture of 56 . two-proportion inference tests. Chapter 22. Proportions observed in independent random samples . are. independent. Thus, we can add their variances. So…. The standard deviation of the difference between two sample proportions is . When the statement of a problem says that A varies directly as B or that A is directly proportional to B, the equation . . A = . kB. Is implied. . When the statement says that A varies inversely as B or that A is inversely proportional to B, the equation. John Barker & Jennifer Thomas. Nevada Math Project. March 2015. Big Ideas. Ratio – A ratio is used to measure two different things in two different units.. Ex. How far a car drives with how long it takes to get to the destination. . Difference Between Proportions. Sometimes we want to see if there is a significant difference between independent groups.. Control group vs. treatment group or placebo group. Men vs. women. Last year vs. this year. Yawn Seed?. Subject. Yawned?. Yes. No. Total. Yes. 10. 4. 14. No. 24. 12. 36. Total. 34. 16. 50. Trial. Number who yawned in yawn seed group. Number who yawned in no yawn seed group. Difference in proportions (yawn. Model data with a linear function. Evaluate . and graph piecewise-defined functions. Evaluate . and graph the greatest integer function. Use . direct variation to solve problems. Modeling with a Linear Function.