PPT-How Margin of Error, deviation from the mean, and standard

Analyzing Statistics In the News Looking at Statistics In the News Objectives Students will be able to calculate the standard deviation of a set of data Students will be able to explain the reliability of a set of data using measures such as margin of error and standard deviation. DESCRIPTION The formula for the standard deviation is EQ 221 while the formula for the weighted standard deviation is EQ 222 where w is the weight for the ith observation N is the number of nonzero weights and is the weighted mean of the observation 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?. for . AP Biology. Statistics are helpful to better understand the meaning of a sample data set. What do these numbers actually MEAN?. Data analysis allows you to…. Arrive at conclusions about your data. 2region Theavailablearea,graphregion,andplotregionaredened (outergraphregion)margin margin (innergraphregion) (outerplotregion)margin margin (innerplotregion) margin margin margin margin titlesappear First center (expected value). Now - spread. 4.2 (cont.) Standard Deviation of a Discrete Random Variable. Measures how “spread out” the random variable is. Summarizing data and probability. Data. Blake Laing. Southern Adventist University. I. uncertainty . Measurements have . no meaning. without a quantified experimental error/uncertainty . George: . What can he conclude?. Martha: . 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 . 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.. 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. Mean = . 4. Median= . 4. Std. dev.= 2.24. CH. 2. If the mean is . greater . than the median, the distribution is skewed . right. .. If the mean is . less. than the median, the distribution is skewed .