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[DOC File]CALCULATING STANDARD DEVIATION WORKSHEET
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To find the average deviation: (1) Find the average of all your measurements; (2) Find the absolute value of the difference of each measurement from the average (its deviation); (3) Find the average of all the deviations by adding them up and dividing by the number of measurements. Of course you need to take enough measure-ments to get a ...
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[DOC File]Appendix2
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When the standard deviation is large, the scores are more widely spread out on average from the mean. The standard deviation is calculated to find the average distance from the mean. Practice Problem #1: Calculate the standard deviation of the following test data …
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[DOC File]00 PSY221 title and cover page - Fayetteville State University
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A department store is interested in the average balance that is carried on its store’s credit card. A sample of 40 accounts reveals an average balance of $1,250 and a standard deviation of $350. Find a 95% confidence interval for the mean account balance on this store’s credit card.
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[DOC File]Z-Score Practice Worksheet
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During consumer testing, a sample of n=30 batteries lasted an average of only = 32.5 hours with a standard deviation of 3. Conduct a one-tailed hypothesis test with α = .05. STEP 1: State your hypotheses (include both H0 and H1).
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[DOC File]Appendix2
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To find the average deviation: (1) Find the average of all your measurements; (2) Find the absolute value of the difference of each measurement from the average (deviations); (3) Find the average of all the deviations by adding them up and dividing by the number of measurements. Of course you need to take enough measurements to get a ...
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[DOC File]Standard deviation - 物理學系
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The variance is the average squared deviation from the mean, which is measured in square units. In this case, years squared. (These units have no meaning in this case.) The standard deviation is the square root of the variance, taking the units back to years. The coefficient of variation takes the standard deviation (in years) divided by the ...
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Average Deviation Calculator - Free Online Calculator
Sep 26, 2015 · Find the standard deviation for the number of baskets scored by the team for the ten games: 8, 4, 6, 6, 7, 7, 9, 4, 8, 5. Follow the steps below to calculate the standard deviation. Step 1: Average the scores in the Score column of the table below in order from the smallest to the largest.
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[DOCX File]CALCULATING STANDARD DEVIATION WORKSHEET
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In other words, the standard deviation of a discrete uniform random variable X can be calculated as follows: For each value xi calculate the difference between xi and the average value . Calculate the squares of these differences. Find the average of the squared differences. This quantity is the variance σ2. Take the square root of the variance.
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[DOC File]Exam 3 Practice Questions
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The average reading speed of students completing a speed-reading course is 450 words per minute (wpm). If the standard deviation is 70 wpm, find the z-scores associated with each of the following reading speeds. a) 320 wpm b) 475 wpm c) 610 wpm. 4. SAT vs. ACT. Eleanor scores 680 on the SAT mathematics test.
relative average deviation equation

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