STATS 315 Final Exam | Questions and Answers Which of the following statements are true? A: Operationalizing variables is a way to overcome measurement error B: Self-esteem is a psychological construct C: Only operationalized variables involve measurement error D: All variables of interest in psy...
A: Operationalizing variables is a way to overcome measurement error
B: Self-esteem is a psychological construct
C: Only operationalized variables involve measurement error
D: All variables of interest in psychology involve psychological constructs
E: Marathon finishing time is not a psychological construct
F: Height is not a valid measure of intelligence
G: Measurement error only results from sloppy measurements
H: Measurement error is inevitable
A convenience sample is
A: an unavoidable consequence of random sampling
B: unlikely to produce misleading results
C: the selection of a sample that is conveniently available
D: very much like a lottery
Which of the following best describes the statistical concept of a population?
A: a subset of individuals sharing some characteristic of interest
B: the scores (on some variable) from a subset of individuals sharing some
characteristic of interest
C: all monarch butterflies in Michoacan
D: the scores (on some variable) from all individuals sharing some characteristic of
interest
I wanted to estimate the average heart rate of hummingbirds in Quebec. To do this I
computed the average heartrate of the first 25 hummingbirds that visited my
hummingbird feeder last spring. Therefore, I have
A: computed a statistic
B: computed an unbiased parameter
C: chosen a simple random sample
D: computed an unbiased statistic
Inferential statistics simply describe the characteristics of a collection of scores.
True
False
, A statistic is a numerical characteristic of a sample.
True
False
Inferential statistics requires simple random sampling.
False
True
A parameter is a numerical characteristic of a sample.
True
False
Sampling error means that there was some kind of mistake in the way a sample was
chosen.
False
True
Which of the following best describes the statistical concept of a sample?
A: all individuals associated with the scores in a distribution
B: a subset of worms in my back yard
C: a subset of individuals sharing some characteristic of interest
D: the scores (on some variable) from all individuals sharing some characteristic of
interest
Sampling error is
A: an unavoidable consequence of random sampling
B:an avoidable consequence of non-random sampling
C:is the result of non random sampling
D:the difference between measures of the same individual obtained on different
occasions
The Celsius scale is a ratio scale.
True
False
All variables whose values are numbers are quantitative variables.
True
False
Time to solve a sudoku puzzle is a valid measure of intelligence.
True
False
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