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Type of frequency distribution most commonly found in quality work?
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∙ 12y ago
Bionomial
Wiki User
∙ 12y ago
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The mode is always found at the highest point of a graph of a data distribution?
true
After 5 points are added to every score in a distribution the mean is calculated and found to be m equals 30 What was the value of the mean for the original distribution?
35
What does it mean to have a normal distribution of data?
The Normal or Gaussian distribution is a probability distribution which depends on two parameters: the mean and the variance (or standard deviation). In may real life situations measurements are found to be approximately normal. Furthermore, even if the underlying distribution of a variable is not normal, the mean of a number of repeated observations of the variable will approximate the normal distribution.The term "approximate" is important because, although the heights of adult males (for example) appear to be normally distributed, the true normal distribution must allow negative heights whereas that is not physically possible!
Can the median be found for an open ended distribution?
Yes, if it is a mathematically well behaved distribution.For a symmetric distribution, such as the Gaussian (Normal) it is the same as the mean.For the Standard Normal or the Student's t the median is 0.For the exponential distribution, with parameter lambda, the median is ln(2)/lambda. (ln = natural logarithm.]A chi-squared distribution with k degrees of freedom has a median approximated by k*(1 - 2/9k)^3.For a Beta(a, b) distribution the median depends on the incomplete Beta function but if a and b >1, then it can be approximated by (a - 1/3)/(a + b - 2/3).For a Weibull distribution, with scale parameter L and shape parameter K, it is L*(ln2)^(1/K).
Will the sum of two normally distributed random variables be normally distributed if the random variables are independent?
Yes, and the new distribution has a mean equal to the sum of the means of the two distribution and a variance equal to the sum of the variances of the two distributions. The proof of this is found in Probability and Statistics by DeGroot, Third Edition, page 275.
How many types are there of frequency distribution?
Introduction:Frequency distribution is used to compress and summarize the whole data by grouping the data into classes and records the data points that fall in each class. The frequency distribution is considered as the base for descriptive statistics and they are also used to define the ordinal, nominal and the interval data. Frequency distribution is the comfortable way of grouping and organizing the data.Example of Frequency Distribution:Consider the frequency table for the students in a class where the data has been grouped according to the height of the students. Range of height Total number of student's cumulative frequency3.0 - 4.5 feet 15 154.5 - 5.0 feet 20 355.0 - 6.5 feet 25 506.5 - 7.0 feet 30 80In the case of nominal data the use of the contingency table is required. The frequency distributions are used to present the data graphically.Types of Frequency Distributions:There are three types of frequency distributions. Cumulative frequency distribution,Grouped frequency distribution,Cumulative Grouped frequency distribution.Cumulative frequency distribution (type 1):The cumulative frequency can be found from the frequency distribution by adding the cumulative frequency column. The highest cumulative frequency should be equal to the total number of frequenciesTemperature Frequency Cumulative frequency47 3 2246 3 1945 4 1544 3 1243 3 9Grouped frequency distribution (type 2):The grouped frequency distribution can be formed by grouping the values together into the class intervals. The range can be calculated using the maximum and the minimum values.Data set for temperature45 48 47 43 4442 45 43 46 4645 47 46 47 4543 47 45 47 4644 43 44 46 47The grouped frequency distribution is given byClass interval midpoint frequency45- 47 46 1542 - 44 43 7Cumulative grouped frequency distribution (type 3):In cumulative frequency distribution the cumulative frequency column is added to the grouped frequency distribution so that we can get the cumulative grouped frequency distribution.Class interval midpoint frequency Cumulative frequency45- 47 46 15 2242 - 44 43 7 7
Where can one find information about frequency distribution?
Information on frequency distribution can be found on many sites related to psychology and biotechnology. The About's Psychology page offers a good overview on the topic while the National Center for Biotechnology Information has a more in depth reading.
What instrument measures frequency?
a frequency counterIt all depends on what you're measuring the frequency of. From what I have found, you need either a frequency counter, or if it's sound, a CRO(cathode ray oscilloscope), but a high quality one is extremely expensive, or if you have an iPod touch/iPhone and headphones with a mic, just get an app for it.Gladometer
Which distribution is the rarest found in communities?
Uniform distribution
What is the distribution of king cobras?
King cobras are most commonly found in South Asia and Southeast Asia. They can also, rarely, be found in the southern parts of China. King cobras prefer dense forests close to water.
What are diamonds commonly found in?
Diamonds are commonly found in volcanic pipes.
Where is cotton commonly found?
Cotton is commonly found in the cotton tree.
What is an example of frequency?
Frequency can be found in sound, light, and line current. An example of frequency is, the frequency wave of light will determine what color the light is.
Is astatine found most commonly as an element?
no, it is most commonly found as a compound
Where is circuit breaker?
In home installations, the breakers will be found in the service distribution panel. In some homes this distribution is found in the basement. In ranch type homes, slab on grade, the distribution panel will be found in the utility room that houses the washer and dryer.
Are tornadoes commonly found in the highland areas?
Tornadoes are more often associated with plains, but they are not uncommon in some highland areas. Overall climate has more influence on tornado frequency than topography.
What is oxgen most commonly found in?
Oxygen is most commonly found in trees and plants.
