PPT-Standard Deviation 4 3 2

1 0 In addition to level 30 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 The student will summarize represent and interpret data on a single count or measurement variable. ariance The ariance of a set of values which we denote by i de64257ned as where is the mean stands for each data value in turn and is the frequency with which data alue o ccurs Note that An alternative yet equivalent formula which is often easier to 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 ariance The ariance of a set of values which we denote by i de64257ned as where is the mean stands for each data value in turn and is the frequency with which data alue o ccurs Note that An alternative yet equivalent formula which is often easier to 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?. 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?. 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. Standard Deviation and a Bell Shaped Curve. Bozeman Biology Video on Standard Deviation. Standard deviation measures the spread or the variation in the data. 68% of the individuals are within 1 standard deviation . 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 . Kevin McLeod & Chris Horton. OCE, Region 12 Houston. 1. Introduction. Brief discussion of history and scope. Review of compliance documents. Investigation process. 2. Clean Air Act. 1977 Clean Air Act. Annette Maxwell and Erica Solis. Office of Compliance and Enforcement . May 5, 2015. Brief discussion of history and scope. Review of compliance documents. Investigation process. Introduction. 1977 Clean Air Act. Unusual Values. . . Ruisheng. Zhao. OER – . www.helpyourmath.com. . 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.. 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.. Since the averages are the same, can we assume that the students in both classes all did pretty much the same on the exam?. The answer is… No.. The average (mean) does not tell us anything about the distribution or variation in the grades..