PPT-Calculate Standard Deviation

Analyze the spread of data 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. 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 the Mean. &. . the. Standard Deviation. We want to. . M CLR. . the calculator to. Clear its Memory. We w. ant to. . . M CLR. . the calculator to. Clear its Memory. We want the calculator . 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?. Grouped . frequency table. . We first need to make . sure the . calculator is . CL. ea. R. . of all . previous content. . We first need to make . sure the . calculator is . CL. ea. R. . of all . previous . 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 . 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. a . frequency . table. 1 person rolled a di 50 times and recorded their rolls.. Find the . Min . Max. Range. Mean . Standard Deviation. . from the calculator. . We first need to make . sure the . calculator is . 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 . Room 315. Gas mileage samples for 250 new Honda Fit are normally distributed, with a mean of 31.3 mpg and a standard deviation of 3.6 mpg. a. Determine the percent of samples that are between 27.7 mpg and 38.5 mpg. 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.. The student will summarize, represent, and interpret data on a single count or measurement variable.. 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.. Standard Deviation. Standard Deviation – measure . how spread out the data is from the mean. Lower standard deviation:. Data is . closer to the mean. Greater likelihood that the independent variable is causing the changes in the dependent variable. 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.