answersLogoWhite
Technology
Math and Arithmetic

A What is empirical rule?


Top Answer
User Avatar
Wiki User
Answered 2008-05-06 07:23:54

For data sets having a normal, bell-shaped distribution, the following properties apply: About 68% of all values fall within 1 standard deviation of the mean About 95% of all values fall within 2 standard deviation of the mean About 99.7% of all values fall within 3 standard deviation of the mean.

001
๐Ÿ™
0
๐Ÿคจ
0
๐Ÿ˜ฎ
0
๐Ÿ˜‚
0
User Avatar

Your Answer

Still Have Questions?

Related Questions

What does the Empirical Rule indicate?

An empirical rule indicates a probability distribution function for a variable which is based on repeated trials.


Can the Empirical Rule of probability be applied to the uniform probability distribution?

Yes, except that if you know that the distribution is uniform there is little point in using the empirical rule.


Does the empirical rule work for any data set?

No.The empirical rule is a good estimate of the spread of the data given the mean and standard deviation of a data set that follows the normal distribution.If you you have a data set with 10 values, perhaps all 10 the same, you clearly cannot use the empirical rule.


State the main reason for using the empirical rule rather than chebyshevs theorem?

The empirical rule can only be used for a normal distribution, so I will assume you are referring to a normal distribution. Chebyshev's theorem can be used for any distribution. The empirical rule is more accurate than Chebyshev's theorem for a normal distribution. For 2 standard deviations (sd) from the mean, the empirical rule says 95% of the data are within that, and Chebyshev's theorem says 1 - 1/2^2 = 1 - 1/4 = 3/4 or 75% of the data are within that. From the standard normal distribution chart, the answer for 2 sd from the mean is 95.44% So, as you can see the empirical rule is more accurate.


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

Approx 95% of the observations.


What is the empirical rule for 1 and 2 standard deviations?

The empirical rule is 68 - 95 - 99.7. 68% is the area for +/- 1 standard deviation (SD) from the mean, 95% is the area for +/- 2 SD from the mean; and 99.7% is the area for +/- 3 SD from the mean.


What are the 2 methods for math probabilities?

Empirical and theoretical.Empirical and theoretical.Empirical and theoretical.Empirical and theoretical.


What is the difference between Chebyshevs inequality and empirical rule in terms of skweness?

See: http://wiki.answers.com/Q/What_is_the_difference_between_Chebyshevs_inequality_and_empirical_rule_in_terms_of_skewness


By the empirical rule what percentage of the area under the normal curve lies to the left of mu the average Put your answer as a percentage?

50%


What is the probability found by experimenting?

It is experimental or empirical probability.It is experimental or empirical probability.It is experimental or empirical probability.It is experimental or empirical probability.


Is Empirical Rule when 75 percent of the observations lie within plus and minus 2.00 average mean deviations?

me la pelas


Is S8 Empirical or Molecular?

Molecular. The empirical formula would simply be S.


Arguments against the exclusionary rule?

The Exclusionary Rule is not explicity menshioned in the U.S. Constitution. There is no empirical evidence to indicate that the Exclusionary Rule actually deters police misconduct. A recent study indicates that out of 150,000 cases 30,000 criminals managed to escape legal problems due to exclusionary rule.


How to use the Empirical Rule to estimate the proportion of costs within two standard deviations of the mean?

IQ scores for adult students age 25-45 have a bell-shaped distribution with a mean of 100 and a standard deviation of 15.sing the Empirical Rule, what percentage of adult students age 25-45 have IQ scores between 70 and 130?


What is empirical research?

empirical research or empirical study means: data has already been collected and analyzed.


Is qualitative research empirical?

Is qualitative research empirical?


Is H2O a empirical formula?

Yes, this is an empirical formula.


Is the formula C4H10 empirical?

It is an empirical formula.


What is the translation in Tagalog of empirical?

Tagalog of empirical: impiryo


What is the empirical formula for C2N2H8?

C2N2H8 is an empirical formula !


What is empirical literature?

empirical liarature is a English subject


Empirical formula for potassium manganate?

Empirical: K2MnO4


What is the empirical formula for SO3?

SO3 is an empirical formula !


What is the empirical formula C12H6O3?

C4H2O is the empirical formula


What is the empirical formula for zinc bromate?

Empirical: ZnBr2O6


Still have questions?