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How does a sample size impact the standard deviation?
If I take 10 items (a small sample) from a population and calculate the standard deviation, then I take 100 items (larger sample), and calculate the standard deviation, how will my statistics change? The smaller sample could have a higher, lower or about equal the standard deviation of the larger sample. It's also possible that the smaller sample could be, by chance, closer to the standard deviation of the population. However, A properly taken larger sample will, in general, be a more reliable estimate of the standard deviation of the population than a smaller one. There are mathematical equations to show this, that in the long run, larger samples provide better estimates. This is generally but not always true. If your population is changing as you are collecting data, then a very large sample may not be representative as it takes time to collect.
Average bra size?
Average American female bra size is 34B. Average European female size is 34C!Seeing as most women are wearing the wrong size bra, normally because they are measured in the old fashioned way, most women are wearing bra with bigger band sizes than what they need and smaller cup size than ideal. Recent research and theory suggests that the average size for women is around 34DD (rather than 36B as some have claimed). This reply isn't much different to the one above but it's something interesting to note. The average is harder to determine as 8/10 women are wearing the wrong size. lol
True or False As the amount of confidence increases the required sample size should decrease Explain your answer?
I can examine this as a question of theory or real life: As a matter of theory, I will rephrase your question as follows: Does theoretical confidence interval of the mean (CI) of a sample, size n become larger as n is reduced? The answer is true. This is established from the sampling distribution of the mean. The sampling distribution is the probability distribution of the mean of a sample, size n. I will also consider the question as a matter of real life: If I take a sample from a population, size 50 and calculate the CI and take a smaller sample, say size 10, will I calculate a larger CI? If I use the standard deviation calculated from the sample, this is not necessarily true. The CI should be larger but I can't say in every case it will belarger. The standard deviation of the sample will vary from sample to sample. I hope this answers your question. You can find more information on confidence intervals at: http://onlinestatbook.com/chapter8/mean.html
The number of possible samples of size 2 from a population of size 10 with replacement is more than number without replacement?
Of course it is. The first draw always has 10 possibilities. The difference comes in the second draw. The second draw has 10 possibilities if the first one was replaced, but only 9 possibilities if the first one wasn't replaced.
What size would a mens 32 waist be in womens pants?
I believe it to be size 10
Is 10 microns smaller or larger than 50 microns?
larger
Is 10 micron larger or smaller than 4 micron?
Is ten larger than four? Of course.
Is 5 x 10-3 larger or smaller than 5 x 10-6?
Written as decimals, .005 is larger than .000005 so the answer is larger.
How many time smaller is 54 than 540?
To find this out, divide the larger number by the smaller number.To find this out, divide the larger number by the smaller number.To find this out, divide the larger number by the smaller number.To find this out, divide the larger number by the smaller number.
Is a decigram is smaller or larger than a microgram?
Decigram is larger. Deci = 1/10 Micro = 1/1000000
What is the size of the bacterium and of a virus?
Bacteria are normally larger than viruses but smaller than eukaryotic cells. the bacterial cell size ranges between 0.5 to 5 micrometers in length (10 times smaller than eukaryotes). Viruses are ultra microscopic, their size ranges between 20-500 nanometers, it can be detected by electron microscopes.
Would 10 smaller cans fit inside a larger can?
That would depend on the size of the cans.
How big is a virus compared to a bacteria?
bacteria size ranges in micrometer i.e. 10-6m virus size ranges in nanometer i.e. 10-9m
What size screen is the best size for a wireless portable tv?
7 to 10 inches would be a good size for a wireless portable tv. Larger sizes than this would invalidate the portability aspect; smaller would strain your eyes!
How do you get biceps the same size?
By working out the smaller bicep more than you work out the larger one. For example if you are a righty, usually your right bicep is larger, Therefore if you were doing bicep curls I would do 10 with the right and 15 with the left.
Is string smaller than an atom?
Strings are much, much, much, much smaller than atoms. Strings are expected to be on the order of the Planck length; about 10-35 m. Atoms, in contrast, are on the order of Angstroms, 10-10 m. If strings were expanded to the size of atoms, atoms on this new scale would be many times larger than the solar system.
Why are tenths larger than hundredths even though 10 is smaller number than 100?
Tenths are larger than hundredths because hundredths are 10 times smaller than the tenths.The first digit on the right means tenths. (1/10)As we move further right, everynumber gets10 times smaller.Thenext digit to the tenths is the hundredths, thus hundredths is 10 times smaller than the tenths (1/10 * 1/10 = 1/100)
