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Adult height is approximately normally distributed. according to the statistics in action box on p.202-203?
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If a particular batch of data is approximately normally distributed you would find that approximately?
d. All the above.
Why the value of a roll of two dice is normally distributed?
It is not! It is very approximately so and the key word there is approximately.
What are some examples of abnormal and normal distribution in statistics?
IQ is normally distributed in the general population. Age is not.
When you draw a sample from a normal distribution what can you conclude about the sample distribution?
The answer depends on how the sample is selected. If it is a simple random sample, of size n, then it is distributed approximately normally with the same mean as the population mean.The answer depends on how the sample is selected. If it is a simple random sample, of size n, then it is distributed approximately normally with the same mean as the population mean.The answer depends on how the sample is selected. If it is a simple random sample, of size n, then it is distributed approximately normally with the same mean as the population mean.The answer depends on how the sample is selected. If it is a simple random sample, of size n, then it is distributed approximately normally with the same mean as the population mean.
When is the sample mean over repeated samples from the same population or process not normally distributed?
Provided the samples are independent, the Central Limit Theorem will ensure that the sample means will be distributed approximately normally with mean equal to the population mean.
What are the best statistics to use for data that is normally distributed?
The mean and standard deviation. If the data really are normally distributed, all other statistics are redundant.
If a particular batch of data is approximately normally distributed you would find that approximately?
d. All the above.
Why the value of a roll of two dice is normally distributed?
It is not! It is very approximately so and the key word there is approximately.
What are some examples of abnormal and normal distribution in statistics?
IQ is normally distributed in the general population. Age is not.
When you draw a sample from a normal distribution what can you conclude about the sample distribution?
The answer depends on how the sample is selected. If it is a simple random sample, of size n, then it is distributed approximately normally with the same mean as the population mean.The answer depends on how the sample is selected. If it is a simple random sample, of size n, then it is distributed approximately normally with the same mean as the population mean.The answer depends on how the sample is selected. If it is a simple random sample, of size n, then it is distributed approximately normally with the same mean as the population mean.The answer depends on how the sample is selected. If it is a simple random sample, of size n, then it is distributed approximately normally with the same mean as the population mean.
When is the sample mean over repeated samples from the same population or process not normally distributed?
Provided the samples are independent, the Central Limit Theorem will ensure that the sample means will be distributed approximately normally with mean equal to the population mean.
If a data batch is approximately normally distributed would it's normal probability plot would be S-Shaped?
yes
Is a normally distributed variable needed to have a normally distributed sampling distribution.?
Yes, it is.
Can you think of a variable that is normally distributed?
The value of a roll of two dice is normally distributed.
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.
Scores on an examination are assumed to be normally?
...normally distributed.
Is weight normally distributed?
NO!
