PPT-Standard Deviation & Z-Scores

Lets start with an example I divided the class into 2 teams A and B Coincidentally the quiz average for team A is the same as team B 815 So we expect a graph of their scores to be about the same right. Normal distributions show up all over the place.. The standard normal distribution. The standard normal distribution is a . continuous distribution.. It has a mean of 0 and a standard deviation of 1. Let’s start with an example. I divided the class into 2 teams, A and B. Coincidentally, the quiz average for team A is the same as team B, 81.5. So we expect a graph of their scores to be about the same, right?. TIPS FOR APLIA. Developed By: . Ethan Cooper (Lead Tutor) . John Lohman. Michael Mattocks. Aubrey Urwick. Chapter 4: . Variability. Key Terms: Don’t Forget . Notecards. Variability (p. 104). Range (p. 106). Standard Deviation. . summarizes . the amount . each value . deviates. from . the mean. . . SD. . tells us how . spread out . the data items are in our data set.. If data . is close together, . standard will . Comparing two different results. You can do this with your tests. How well did you go?. Tim wants to know if . is hard study has paid . off. . He recently completed two math tests.. This is what I told him. 1.. Six different books will be displayed in the library window. How many different arrangements are there? . 2.. The code for a lock consists of 5 digits. The last number cannot be 0 or 1. How many different codes are possible?. Objectives:. To calculate and interpret the standard deviation of a data set. To compare the standard deviation of data sets. Warm-up: Complete Problem 1, Questions 1 – 5, on pages 490 – 491.. Use. SBS200 - Lecture . Section 001, . Spring 2017. Room . 150 Harvill Building. 9:00 . - . 9:50 . Mondays, Wednesdays & Fridays. .. Welcome. http://www.youtube.com/watch?v=oSQJP40PcGI. A . note. . on doodling. Variability. Di . Fara. Gino’s. Di . Fara. 1. 2. 4. 3. 4. 4. 3. 4. 1. 3. 3. 2. 5. 3. 2. Gino’s. 2. 3. 2. 3. 2. 2. 4. 4. 4. 3. 2. 4. 3. 2. 4. Σ 44 Σ 44. /15 . /. 15. : . Using Microsoft Excel for . Univariate. and Bivariate Analysis. Alfred P. Rovai. Descriptive Statistics – Measures of Relative Position. PowerPoint Prepared by . Alfred P. Rovai. Presentation . Intro to Statistics. What is Normal Distribution?. Modeled by a Bell-shaped curve.. Symmetric about the mean.. Mean (average) and the Median (middle #) are the same number. Or at least very close!!. Can look tall and skinny, short and wide or somewhere in the middle. . Algebra 1B Lesson 42. Instructional material 2. Standard Deviation. Standard Deviation . is a number that tells us how a value in the data set differs from the mean. It also tells us how spread out the numbers are. The bigger the standard deviation, the more widespread the data is.. Obj. : The student will be able to . . 1) Calculate standard deviation. . 2) Calculate mean deviation. HWK: Worksheet. Vocab: 1) standard deviation – a measure of how spread out the numbers are. Bell Ringer Mensa, the largest high-IQ society, accepts SAT scores as indicating intelligence. Assume that the mean combined SAT score is 1500, with standard deviation 300. Jacinto scored a combined 2070.