How to round standard deviation
[DOC File]Measurement Accuracy & Error
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For our example, the sample standard deviation is approximately equal to 0.0768 grams (extra digits kept to avoid round-off error). The Standard Deviation σ is similar to the rms-deviation, except the ‘mean-squared-deviation’ is calculated by dividing the ‘sum-of-the-squared-deviations’ by the so-called “number of degrees of freedom ...
[DOC File]The Practice of Statistics - Mrs. Krummel
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standard deviation. variance Calculator Skills: round( ) sortA( ) sum. mean. 1-Var Stats. Float ENTRY. ANS. ZoomStat. TRACE. WINDOW Displaying Distributions with Graphs (pp.4-30) In statistics, what is meant by individuals? In statistics, what is meant by a variable? What …
[DOCX File]JustAnswer
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Apr 29, 2013 · Round to the nearest thousandth. We are 90% confident that the mean BAC in fatal crashes in which the driver had a positive BAC is in the interval (0.147, 0.153). 2. a poll was conducted that asked 1006 people how many books they had read in the past year. Results indicated that x bar=10.4 books and (standard deviation=16.6 books).
[DOC File]Math 128a
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standard deviation, (X, of X. Round your answer to 3 decimal places. Solution. Questions 12-16 refer to the random variable X which gives the number of customers who visit your business in a given day. You know that the parameters of X are (X = 30 and (X = 6, but you do not know the p.d.f. or the c.d.f. for X.
[DOC File]Z-Score Practice Worksheet
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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. The distribution of SAT scores is symmetric and single peaked, with a mean of 500 and standard deviation of 100.
[DOC File]Standard deviation - 物理學系
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Standard deviation, being the square root of that quantity, therefore measures the spread of data about the mean, measured in the same units as the data. Said more formally, the standard deviation is the root mean square (RMS) deviation of values from their arithmetic mean. ... (though considerations must be made for round-off error, arithmetic ...
[DOC File]OCR Document
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For interpreting a known value of the standard deviation s, find rough estimates of the minimum and maximum “usual” sample values by using: #32 p.109. Aluminum cans with a thickness of 0.0111 in. have axial loads with a mean of 281.8 lb and a standard deviation of 27.8 lb. The axial load is measured by applying pressure to the top of the ...
[DOC File]Whenever you make a measurement in lab, your …
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Standard deviation is a statistical calculation that is a measure of how much scatter (or uncertainty) there is in the data. If you round the standard deviation to one significant digit, that will tell you in which decimal place the uncertain digit of your final result lies. For example, ten quarters were weighed, and the average weight was ...
[DOCX File]Activity 3.5 Applied Statistics
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Calculate each of the following measures of variation for the data set. Show your work. A table has been provided to help you calculate the standard deviations. In the table round values in the last two columns to four decimal places. Report the standard deviation statistics …
[DOC File]1 - JustAnswer
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Apr 08, 2010 · 10. For the total population of a large southern city, mean family income is $34,000, with a standard deviation (for the population) of $5,000. Imagine that you are taking a subsample of 200 city residents. What is the probability that your sample mean is between $33,000 and $34,000?
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