Page 1
BESC 3010 - TEST 2 Questions and
Correct Answers
one reason that researchers nearly always gather data from
samples of participants instead of entire populations is
because....
Ans: It can be impractical or even impossible to study
populations
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 with a
mean of 76?
Ans: 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, the distribution of means will be...
,Page 2
Ans: 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...
Ans: The sampling distribution of means
If a distribution of raw scores has a strong negative skew,
then, given sufficiently large n, the sampling distribution of
means for that distribution will....
Ans: Be normal
The standard error is....
Ans: The standard deviation of the sampling
distribution
, Page 3
The distribution of all possible sample means (of a given
size) is called...
Ans: 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?
Ans: 1
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?
Ans: -2
BESC 3010 - TEST 2 Questions and
Correct Answers
one reason that researchers nearly always gather data from
samples of participants instead of entire populations is
because....
Ans: It can be impractical or even impossible to study
populations
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 with a
mean of 76?
Ans: 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, the distribution of means will be...
,Page 2
Ans: 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...
Ans: The sampling distribution of means
If a distribution of raw scores has a strong negative skew,
then, given sufficiently large n, the sampling distribution of
means for that distribution will....
Ans: Be normal
The standard error is....
Ans: The standard deviation of the sampling
distribution
, Page 3
The distribution of all possible sample means (of a given
size) is called...
Ans: 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?
Ans: 1
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?
Ans: -2
