Exam 2 BESC Final Exam Questions with Correct Answers
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Course
BESC
Institution
BESC
What is meant by a "manipulation" in the context of experimental research? - Answer-Any variable that is controlled by the researcher
The number of small businesses opened in a county each year is an example of which level of measurement? - Answer-ratio
The lowest level of measurement (i.e., ...
Exam 2 BESC Final Exam Questions
with Correct Answers
What is meant by a "manipulation" in the context of experimental research? - Answer-
Any variable that is controlled by the researcher
The number of small businesses opened in a county each year is an example of which
level of measurement? - Answer-ratio
The lowest level of measurement (i.e., the one that contains the least information) is the
______ level of measurement. - Answer-nominal
If a person's employment is coded as Unemployed = 0 or Employed = 1, then that
variable is at the ______ level of measurement. - Answer-nominal
A histogram is appropriate when the data are... - Answer-interval or ratio
A bar chart would work best for which of the following measurement scales? - Answer-
Categorical levels
A bell curve (i.e., a normal distribution) is... - Answer-mesokurtic
Which measure of central tendency works best of negatively skewed distributions? -
Answer-median
What is the lowest level of measurement needed to calculate the mode? - Answer-
nominal
In a negatively skewed distribution, which measure will generally have the highest
value? - Answer-mode
What is the lowest level of measurement needed to calculate the mean? - Answer-
interval
Which measure requires a degrees of freedom calculation? - Answer-sample standard
deviation
What is the sample standard deviation for this data set?
4, 1, 9, 1, 5 - Answer-3.32
If the formula for the population standard deviation were used with sample data, then
result would be... - Answer-too small
, What is the population variance for this data set?
4, 1, 2, 5 - Answer-2.5
If scores in a data set are very different from each other, then, compared to when they
are more similar to each other, the standard deviation... - Answer-will be high
What is the IQR for this data set?
8, 1, 1, 3, 1, 8, 4, 7 - Answer-6.5
If a distribution has a mean of 20 and a standard deviation of 3, then a raw score of 26
would have a z-score of ______. - Answer-2
If a positively skewed distribution of 132 scores with a mean of 49 and a standard
deviation of 14 is standardized then the new distribution's mean will be ______. -
Answer-0
Data is generally gathered from samples instead of populations because... - Answer-it
may be impossible to gather data from populations.
According to the Central Limit Theorem, the mean of the sampling distribution of means
-\mu_{\overline X}μX⎯⎯⎯⎯μX¯- will equal... - Answer-the mean of the original population
If a test has a population mean of 140 and standard deviation of 12, then what is the z-
score for the sample of n = 9 scores with a mean of 136? - Answer--1
According to the central limit theorem, when all possible samples of a sufficient size are
taken from a bimodal population and their means are charted, that distribution of means
will be... - Answer-normally distributed
When the distribution of all possible samples of a given size 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 is completely uniform, 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 200 and a standard deviation of 40, then what is the
standard error for a sample of 400 scores? - Answer-2
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