Slopes
When statisticians want to predict outcomes based on input variables using models created with collected data, which method are they most likely using?
Observational study
Randomized block design
Simulation
Controlled experiment
In a study involving categorical variables, what statistical test could you use to test for association?
ANOVA.
T-test.
Linear Regression.
Chi-square test.
In a random experiment, what is the probability of an impossible event occurring?
0.5
1
0
It cannot be determined.
Which accurately describes the nature of variation in points' positions relative to a theoretical line?
Completely non-random
Somewhat random
Somewhat non-random
Random or non-random
What is the name of the process that involves selection of every nth element from a list after a starting point is randomly chosen?
Experiential sampling
Random dial sampling
Systematic sampling
Voluntary response sampling
Which type of plot would be best for identifying both individual values and potential outliers in a small dataset?
Pie chart
Box plot
Bar graph
Histogram
What term describes the likelihood that a particular outcome will occur when an experiment is repeated many times?
(alternative response)
Probability
(alternative response)
(alternative response)

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In order to assess the center and spread of a distribution of a quantitative variable, which measurement is not typically used?
Range
Standard deviation
Mean
Quartile deviation
Which of the following best describes statistical inference?
Collecting data by conducting an experiment without analysis.
Summarizing data only from a provided dataset without generalization.
Using sample data to draw conclusions about a population.
Calculating exact population parameters from a census.
What type of error is unpredictable and due to factors beyond the control of the experimenter or measurer?
Random error
Experimental error
Systematic error
Sampling error