STA 210 Exam #1 Questions and Correct Answers the Latest Update
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Course
STA 210
Institution
STA 210
inference
The act of drawing conclusions about something we can't know for sure, based on
information we have that we assume to be accurate.
human inference
off-hand way of describing the reflexive inferences we make when we consume
simple statistical constructs, like charts, graphs, and n...
STA 210 Exam #1 Questions and Correct
Answers the Latest Update
inference
✓ The act of drawing conclusions about something we can't know for sure, based on
information we have that we assume to be accurate.
human inference
✓ off-hand way of describing the reflexive inferences we make when we consume
simple statistical constructs, like charts, graphs, and numerical summaries
bar graphs
✓ a good graph to show the distribution of a a categorical variable. Shows change over
time
histograms
✓ graph that shows the distribution of quantitive variables. This allows you to group
data that is close together to make the graph easier to read. Large range of closely
related numbers
competence with fractions, percentages, and knowledge of common
benchmarks
✓ how to form human inferences from statistical constructs
✓ test under controlled conditions with the goal of making cause and effect statements
hypothesis testing
✓ statistical science gets involved through this kind of testing
confounding
✓ -when a third variable, not of any primary interest, distorts that case for causation
✓ - the effects of two or more variables are mixed up, so we cannot say which is
causing the response.
response variable
✓ the primary variable you are taking measurements on for your experiment
explanatory variable
✓ what you are varying in your experiment
subjects
✓ who or what you are doing the experiment on
lurking variable
✓ another name for the third variable that can cause confounding
placebo effect
✓ a real response from subjects to an inert or inactive treatment
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