What does standard deviation result mean?

1 Answer

Answer :

It shows you how dispersed the results are.

Related questions

Description : What mask should I wear for household cleaning products?

Last Answer : Gas/Vapor Respirators Two organic vapor respirator cartridges with particulate filtration. Gas/vapor air-purifying respirators generally come in the form of cartridges that attach to a reusable ... www.lowes.com/n/buying-guide/respirator-safety-mask-guide Respirators should be professionally fitted

Description : Correlation between industrial pollution and men's genitalia?

Last Answer : elbanditoroso: Will this sort of data encourage pollution deniers to take the dangers of pollution seriously? Deniers - as in those that don't believe in the science - don't exist. They ... maximizing profit. I don't think the prospect of grandsons with micropenis will sway them to stop.

Description : What are a list of chemical elements and alloys that can be melted in a typical residential food oven?

Last Answer : I’ve got a slug of a Bismuth Cadmium, Lead, Tin alloy that melts at about 150F , 65C. It melts in hot water. It’s toxic so it’s probably not a good idea to touch it or use kitchen tools.

Description : Why is the weight of 5 ml vinegar almost equal to its volume?

Last Answer : Water has a density of 1 gram per cubic centimetre because it is defined that way and vinegar is mostly water.

Description : How do you get chemical dye off your skin?

Last Answer : Skin peels constantly. It will go away with time.

Description : Why does Superglue not work on plastic?

Last Answer : Many plastics like polyethylene are thermoplastics that can only be re-bonded by heat welding or re-melting of the two surfaces. Adhesive glues like Superglue or methyl methacrylates are great quick fix adhesives ... that will give an OK bond but don't have high hopes for long term structural bonds.

Description : What happens to the chemicals used in dry-cleaning?

Last Answer : It's reused over and over. Perchloroethylene or perc is filtered, distilled and reused by the machine. A small percantage goes out with the clothes and filtered crud but we are talking around .001% ... redneck who thinks paint thinner makes good weed killer is the worst culprit most of the time.

Description : Is the glow-in-the-dark stuff dangerous for people or pets?

Last Answer : Don’t worry about it.

Description : AAA battery leaked all over my TV remote control. Poisonous or just nasty?

Last Answer : answer:Yes, it's poisonous and nasty both. But if you are careful about it, I think you can deal with it. [ disclaimer: I am not a professional hazardous waste handler, proceed at your ... all the paper towels and wash your hands thoroughly. Either throw out the toothbrush or wash it thoroughly.

Description : Question about chemical reactions in chlorine?

Last Answer : answer:Without reading up on it The moisture is changing the composition of the tablets by reacting with them, meaning they are not the original compound they're supposed to be. This could effect their ... to it, but I'd be cautious in that as heat tends to start a variety of reactions.

Description : What's the significance of stores posting signs warning the public of the risk of cancer-causing products and chemicals in their vicinity?

Last Answer : answer:I believe it has to do with Proposition 65, SAFE DRINKING WATER AND TOXIC ENFORCEMENT ACT OF 1986 You often see labeling that is required by the act on products that reads something like: WARNING: This ... does California know that my state doesn't know? What's my state not telling us? :-)

Description : Why does drano clean the tub?

Last Answer : answer:Lye residue in your tub is no fun. Don’t do it. As to why it works; lye+fats (like body oils)=soap.

Description : Do you ever experience an unexpected surge of joy?

Last Answer : I get similar fits of mania. And I consider it to be just that: manic fits of positivity.

Description : Hey all you pro-prop 19 jellies: What is your opinion on K2?

Last Answer : Why not just smoke weed?

Description : Boxed cereals (like Froot Loops) have pesticides laced into the plastic bags to keep bugs out. What chemicals are used?

Last Answer : Interesting. I’d never heard this before. Do you have a link to a source that I could check out? Very disturbing if true.

Description : Some people clean their glass bongs with acetone. How dangerous is that?

Last Answer : Don’t!!!! DO it.

Description : What could cause bright green flames in a campfire?

Last Answer : answer:“Electrons get excited and pushed to higher energy levels by the heat energy. When they fall back down, they give off photons of light of different colors, based upon how far they fall. Different temperatures cause electrons to jump to different levels.” from here

Description : Do you like the feeling of adrelaine pumping through your body?

Last Answer : It really depends. If I'm getting a tattoo or I am in the middle of of an activity, I enjoy the rush, but I enjoy the relaxation after the rush much more. If the adrenaline is pumping because ... The feeling the adrenaline produces can make me feel ill, like I might faint and/or have a panic attack

Description : Does anyone else have this weird drug interaction?

Last Answer : I am the same way… Nice to meet ya, fellow cheap date!

Description : What kind of natural chemicals can I use in my hot tub?

Last Answer : Hi Ingris, A friend of mine has a wooden Japanese tub and he uses an ozonator (I don't know if I am spelling it correctly).

Description : What can I put sulfuric acid in?

Last Answer : answer:Some plastics are specially designed to be able to handle strong acids. If you have one of those I would definitely use it. What molarity is the H2SO4? See also: http://www.ilo.org/public/english/protection/safework/cis/products/icsc/dtasht/_icsc03/icsc0362.htm

Description : What gas do you get when you mix bleach with dry acid?

Last Answer : A big mess !!

Description : How to Dispose of Chemicals

Last Answer : How to Dispose of Chemicals Different types and amounts of chemical waste can be found in the home, office, school, or industry you're working in. Many chemical waste products can be very ... tips, you can properly dispose of chemical waste and keep yourself and the environment free from harm.

Description : Standard deviation and mean?

Last Answer : It is very handy to just memorize the 68 – 95 – 99.7 rule. It means 68% of the population is within +/-1 SD, 95% are within 2 SD and 99.7 are within 3 SD.

Description : How do I find the mean and standard deviation from a frequency table?

Last Answer : Do you have a graphing calculator?

Description : How to compute mean and standard deviation for each column of a pandas dataframe -Web-Development

Last Answer : answer:

Description : What is the standard deviation and what is the probability that a student scored higher than 322 if the mean test score is 312 and 16 percent of the scores are under 307?

Last Answer : Assuming a normal distribution:If 16% are less than 307, then 84% are greater than 307.Using single tailed normal tables we want the z value whichgives 84%-50% = 34% = 0.34 to the left of the mean; this is z ≈ ... 1 - 0.977 = 0.023 = 2.3 % are greater than 322→ probability greater than 322 is 2.3%

Description : How many of scores will be within 1 standard deviation of the population mean?

Last Answer : Assuming a normal distribution 68 % of the data samples will bewith 1 standard deviation of the mean.

Description : The square of standard deviation is (A) Coefficient of variance (B) Standard deviation (C)Variance (D) Mean deviation

Last Answer : (C)Variance

Description : method requires the following data pertaining annual flood series (i) Mean value (ii) Standard deviation (iii) Length of record (iv) Coefficient of skew The correct answer is (A) (i) and (ii) (B) (i),(i) and (iii) (C) (i), (ii) and (iv) (D) (i), (ii), (iii) and (iv)

Last Answer : Answer: Option B

Description : The results for accuracy studies in Analytical Method Validation, are expressed in terms of? A. % Relative error B. Correlation coefficient C. Relative standard deviation D. Mean

Last Answer : A. % Relative error

Description : The distribution of heights of American women aged 18 to 24 is approximately normally distributed with a mean of 65.5 inches and standard deviation of 2.5 inches. Calculate the z-score for a woman six feet tall. a. 2.60 b. 4.11 c. 1.04 d. 1.33

Last Answer : a. 2.60

Description : Provided that the ACT is reasonably normally distributed with a mean of 18 and standard deviation of 6, determine the proportion of students with a 33 or higher. a. 0.0062 b. 0.0109 c. 0.0124 d. 0.0217

Last Answer : a. 0.0062

Description : A national random sample of 20 ACT scores from 2010 is listed below. Calculate the sample mean and standard deviation. 29, 26, 13, 23, 23, 25, 17, 22, 17, 19, 12, 26, 30, 30, 18, 14, 12, 26, 17, 18 a. 20.50, 5.79 b. 20.50, 5.94 c. 20.85, 5.79 d. 20.85, 5.94

Last Answer : Katie earned 84,92,84,75 and 70 on her first 5 tests. What is the minimum grade Katie needs to earn on the next test to have a mean of 84?

Description : Given IQ scores are approximately normally distributed with a mean of 100 and standard deviation of 15, the proportion of people with IQs above 130 is: a. 95% b. 68% c. 5% d. 2.5%

Last Answer : d. 2.5%

Description : In a large random data set following normal distribution, the ratio (%) of number of data points which are in the range of (mean ± standard deviation) to the total number of data points, is (A) ~ 50% (B) ~ 67% (C) ~ 97% (D) ~ 47%

Last Answer : Answer: B

Description : Statistics question. Finding the standard deviation for these numbers: 1, 2, 98, 100, 105.

Last Answer : Hint: There aren’t going to be any trick questions in statistics. There is enough information to calculate the standard deviation.

Description : How to understand this Standard Deviation question?

Last Answer : So, this question is related to the definition of standard deviation, rather then having to calculate it. I refer you to wikipedia, which has a decent write-up. Specifically the rules for normally distributed data ... the math there is too high-level, just take a good look at the plot on the right.

Description : Range, and Standard Deviation?

Last Answer : http://en.wikipedia.org/wiki/Range_%28statistics%29 http://en.wikipedia.org/wiki/Arithmetic_mean http://en.wikipedia.org/wiki/Standard_deviation#Basic_example_of_a_population_standard_deviation

Description : What is the standard deviation ?

Last Answer : Ideal deviation is a statistical method of measuring business risk.

Description : What type of measures are the range and the standard deviation?

Last Answer : They are measures of the spread of data.

Description : What is the standard deviation of the following data set rounded to the nearest tenth 52.1 45.5 51 48.8 43.6?

Last Answer : Feel Free to Answer

Description : In the Empirical Rule of data will fall in with two standard deviation.?

Last Answer : Approx 95% of the observations.

Description : In the Empirical Rule of data will fall in with two standard deviation.?

Last Answer : Approx 95% of the observations.

Description : What is the qualifying time for the fastest 5 percent of all runners if the average finishing time is 5 minutes 17 seconds with standard deviation of 12 seconds?

Last Answer : Assuming a normal distribution:For the fastest 5% we need to find the z value which gives 100%- 5% = 95% of the area under the normal curve (from -∞).Using single tailed tables, we need the z value which gives 95%- 50% ... deviation≈ 5 min 17 sec + 1.645 12 sec≈ 5 min 17 sec + 20 s= 5 min 37 sec

Description : What is the standard deviation if P 0.2 and n 400?

Last Answer : The answer depends on what the distribution is!

Description : In which of the following towns does the LMT (Local Meridian Time) show the greatest deviation from the 1ST (Indian Standard Time) ? [NDA 1991] (a) Delhi (b) Cochin (c) Mumbai (d) Kohima

Last Answer : Ans: (d)

Description : The standard deviation of the variation in the transmission loss of a circuit should not exceed A. 3 dB B. 1 dB C. 5 dB D. 0.5dB

Last Answer : B. 1 dB

Description : Political unrest, budget overruns, size and complexity of the project  Answer: B  (8)Decision trees are best used for : 1. Determining the interaction of the amount at stake and the expected ... and the associated events  4. A flow chart which determines the standard deviation of the risk event

Last Answer : 3. An illustration of how to see the interactions between decisions and the associated events

Description : If the expected time for completion of a project is 10 days with a standard deviation of 2 days, the expected time of completion of the project with 99.9% probability is (A) 4 days (B) 6 days (C) 10 days (D) 16 day

Last Answer : (D) 16 days