BESC Exam 2 Questions and Answers
One reason that researchers nearly always gather data from samples of participants instead of entire
populations is because.. - Answer-It can be impractical or even impossible to study populations.
According to the Central Limit Theorem, the mean of the sampling distribution of means - \mu_{\
overline{X}}
μ
X
- will equal... - Answer-The mean of the original population.
If a test has a population mean of 70 and standard deviation of 6, then what is the z-score for a sample
of n = 9 scores with a mean of 76? - Answer-3
The central limit theorem says that when all possible samples of a sufficient size are taken from a
population and their means are charted, that distribution of means will be... - Answer-Normally
distributed
, The distribution of all possible samples of a given size (e.g., n = 54 or n = 117) are taken from a
population and their means are charted, that distribution is known as... - Answer-The sampling
distribution of means.
If a distribution of raw scores has a strong negative skew, then, given a sufficiently large n, the sampling
distribution of means for that distribution will... - Answer-Be normal
The standard error is... - Answer-The standard deviation of the sampling distribution.
The distribution of all possible sample means (of a given size) is called... - Answer-The sampling
distribution of means.
If a distribution has a mean of 100 and a standard deviation of 15, then what is the standard error for a
sample of 225 scores - Answer-1. SE is is SD of the of original pop divided by the square root of the
sample number.
If a distribution has a mean of 30 and a standard deviation of 3, then what is the z-score for a sample of
4 scores with a mean of 27? - Answer--2
The Central Limit Theorem states that the shape of a sampling distribution becomes closer to what
shape as the number of sample means in the distribution increases? - Answer-Normal
If the population mean for a distribution is 150 and the standard deviation is 20, then what is the z-score
for a sample of 100 people with an average score of 153? - Answer-1.5. Take the sample mean minus
the pop. mean and divide by the standard deviation which is divided by the square root of the sample
size.
If a person were to create a sampling distribution for sample standard deviations, then the mean of that
distribution would be equal to... - Answer-the standard deviation of the original distribution.
One reason that researchers nearly always gather data from samples of participants instead of entire
populations is because.. - Answer-It can be impractical or even impossible to study populations.
According to the Central Limit Theorem, the mean of the sampling distribution of means - \mu_{\
overline{X}}
μ
X
- will equal... - Answer-The mean of the original population.
If a test has a population mean of 70 and standard deviation of 6, then what is the z-score for a sample
of n = 9 scores with a mean of 76? - Answer-3
The central limit theorem says that when all possible samples of a sufficient size are taken from a
population and their means are charted, that distribution of means will be... - Answer-Normally
distributed
, The distribution of all possible samples of a given size (e.g., n = 54 or n = 117) are taken from a
population and their means are charted, that distribution is known as... - Answer-The sampling
distribution of means.
If a distribution of raw scores has a strong negative skew, then, given a sufficiently large n, the sampling
distribution of means for that distribution will... - Answer-Be normal
The standard error is... - Answer-The standard deviation of the sampling distribution.
The distribution of all possible sample means (of a given size) is called... - Answer-The sampling
distribution of means.
If a distribution has a mean of 100 and a standard deviation of 15, then what is the standard error for a
sample of 225 scores - Answer-1. SE is is SD of the of original pop divided by the square root of the
sample number.
If a distribution has a mean of 30 and a standard deviation of 3, then what is the z-score for a sample of
4 scores with a mean of 27? - Answer--2
The Central Limit Theorem states that the shape of a sampling distribution becomes closer to what
shape as the number of sample means in the distribution increases? - Answer-Normal
If the population mean for a distribution is 150 and the standard deviation is 20, then what is the z-score
for a sample of 100 people with an average score of 153? - Answer-1.5. Take the sample mean minus
the pop. mean and divide by the standard deviation which is divided by the square root of the sample
size.
If a person were to create a sampling distribution for sample standard deviations, then the mean of that
distribution would be equal to... - Answer-the standard deviation of the original distribution.
