Calculate Standard Error Percentages
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Standard Error Of Mean Calculation
visualization. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Calculating Standard deviation of percentages? up
Standard Error Of Measurement Calculation
vote 0 down vote favorite 1 I have the following data X 1 2 3 4 5… Y 10 12 13 14 15… X/Y 10% 16% 23% etc. How do I find the standard deviation of percentage (last line)? Can I treat the ratio as a normal distribution and apply regular SD formula? standard-deviation share|improve this question asked Nov 6 '13 at 22:36 Nox 1111 This looks like a standard textbook problem. Please review the tag wiki standard error calculation in regression info of the self-study tag and add it if at all applicable. –Glen_b♦ Nov 6 '13 at 23:06 add a comment| 2 Answers 2 active oldest votes up vote 2 down vote You should clarify your question to be clear whether you want the sample standard deviation of the collection of percentages or the estimated standard deviation of each percentage. I'll discuss the second case. You should also clarify the question enough that I can remove some of the 'if's below. If the Y's are total counts of objects of which the X's are counts of some particular subset (such as X='number of people with red hair in a classroom', and Y='number of people in the classroom'), and if you can assume independence of occurrence of the characteristic being counted in X and if you can assume constant probability of occurrence of that characteristic, ... then conditional on Y, you're in a binomial sampling situation and the estimated s.d. of the fraction X/Y is $\sqrt{\frac{1}{Y} \frac{X}{Y}(1-\frac{X}{Y})}$, which you can convert to percentage terms by multiplying by 100%. share|improve this answer answered Nov 6 '13 at 23:03 Glen_b♦ 148k19246511 add a comment| up vote -1 down vote The classical definition of the standard deviation estimate is independent from the theoretical distribution of the data, so you can perfectly apply it to a set of percentages $$ s = \sqrt{\frac{1}{n-1}\sum_{i=1}^n \left( z_i - \overline
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Standard Error Calculation In R
site About Us Learn more about Stack Overflow the company Business Learn standard error calculation without standard deviation more about hiring developers or posting ads with us Cross Validated Questions Tags Users Badges Unanswered Ask Question _ Cross margin of error calculation Validated is a question and answer site for people interested in statistics, machine learning, data analysis, data mining, and data visualization. Join them; it only takes a minute: Sign up Here's how http://stats.stackexchange.com/questions/74797/calculating-standard-deviation-of-percentages it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Calculating standard deviation associated with percentage change [duplicate] up vote 0 down vote favorite This question already has an answer here: Standard deviation of a ratio (percentage change) 1 answer I have two data sets. The first data set, let's call it $X$ has http://stats.stackexchange.com/questions/64652/calculating-standard-deviation-associated-with-percentage-change an average value of $\bar{x}_{X}$ and standard deviation of $s_{X}$, the second data set $Y$ has an average value of $\bar{x}_{Y}$ and standard deviation of $s_{Y}$.I want to find out the standard error or standard deviation of a percentage change of data set 2 compared to 1. So I have: $$ \frac{\bar{x}_{Y}-\bar{x}_{X}}{\bar{x}_{X}}\cdot100 $$ Now my question is, how to take into account the standard deviations for this percentage value? standard-deviation share|improve this question edited Jul 17 '13 at 22:40 COOLSerdash 10.6k63254 asked Jul 17 '13 at 21:13 Chris Harrod 111 marked as duplicate by COOLSerdash, gung, Peter Flom♦, Scortchi♦, Gala Jul 18 '13 at 12:28 This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question. 3 Hi Chris and welcome to the site! I have a question: Are the datasets independent from each other? –COOLSerdash Jul 17 '13 at 21:31 add a comment| 1 Answer 1 active oldest votes up vote 2 down vote You can calculate the variance for the percentage change as follows: Your problem is to calculate $\mathrm{Var}(100\cdot (Y-X)/X)$. This can be
Tables Constants Calendars Theorems Standard Error of Sample Proportion Calculator https://www.easycalculation.com/statistics/standard-error-sample-proportion.php Calculator Formula Download Script Online statistic calculator allows you to estimate the accuracy of the standard error of the sample proportion in the binomial standard deviation. Calculate SE Sample Proportion of Standard Deviation standard error Proportion of successes (p)= (0.0 to 1.0) Number of observations (n)= Binomial SE of Sample proportion= Code to add this calci to your website Just copy and paste the below code to your webpage where you want standard error calculation to display this calculator. Formula Used: SEp = sqrt [ p ( 1 - p) / n] where, p is Proportion of successes in the sample,n is Number of observations in the sample. Calculation of Standard Error in binomial standard deviation is made easier here using this online calculator. Related Calculators: Vector Cross Product Mean Median Mode Calculator Standard Deviation Calculator Geometric Mean Calculator Grouped Data Arithmetic Mean Calculators and Converters ↳ Calculators ↳ Statistics ↳ Data Analysis Top Calculators Logarithm Age Calculator LOVE Game Mortgage Popular Calculators Derivative Calculator Inverse of Matrix Calculator Compound Interest Calculator Pregnancy Calculator Online Top Categories AlgebraAnalyticalDate DayFinanceHealthMortgageNumbersPhysicsStatistics More For anything contact support@easycalculation.com
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