PPT-Lecture Notes Mean, Variance, and Standard Deviation, and

Unusual Values Ruisheng Zhao OER wwwhelpyourmathcom What is the MEAN How do we find it The mean is the numerical average of the data set and we use the mean to describe the data set with a single value that represents the center of the data Many statistical analyses use the mean as a standard measure of the center of the distribution of the data. We can evaluate the variance of a set of data from the mean that is how far the observations deviate from the mean This deviation can be both positive and negative so we need to square these values to ensure ositive and negative values do not simply We can evaluate the variance of a set of data from the mean that is how far the observations deviate from the mean This deviation can be both positive and negative so we need to square these values to ensure ositive and negative values do not simply Section 3-3. Objectives. Describe data using measures of variation, such as range, variance, and standard deviation. Example: You own a bank and wish to determine which customer waiting line system is . 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). 2.4. http://. www.youtube.com/watch?v=Rn_OhPKBjB0. Why we need to learn something so we never sound like this. . Range . The simplest measure of variance is the range.. The range of a data set is the difference between the maximum and minimum data entries in the set.. Earlier in the week we went over the exam (Monday and Tuesday ). Wednesday we revised expected number, variance and standard deviation, including using the GC to simplify variance calculations (workbook p8,9). . Averages and Variation. 3. Copyright © Cengage Learning. All rights reserved.. . Section. . 3.2. Measures of Variation. Focus Points. Find the range, variance, and standard deviation.. Compute the coefficient of variation from raw . Dr. Halil . İbrahim CEBECİ. Chapter . 06. Continuous. . Probability. . Distributions. a . continuous random variable. . is one that can assume an . uncountable. number of values..  . We cannot list the possible values because there is an infinite number of them.. Standard Deviation. &. The Bell Curve. Standard Deviation. 1st find the . variance. for a set of data. Variance is the average squared deviation from the mean of a set of data. Computing the Variance . 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.. Analyze the spread of data.. 4. 3. 2. 1. 0. In addition to level 3.0 and above and beyond what was taught in class,  the student may:. · Make connection with other concepts in math. · Make connection with other content areas.. Analyze the spread of data.. 4. 3. 2. 1. 0. In addition to level 3.0 and above and beyond what was taught in class,  the student may:. · Make connection with other concepts in math. · Make connection with other content areas.. 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. Find the standard deviation and variance of a set of values. . Apply standard deviation and variance. . Vocabulary. Standard deviation: A measure of how far the numbers in a data set deviate from the mean. Represented by the Greek letter Sigma .