17 questions were answered correctly.
1 question was answered incorrectly.
1
●
Which of the following is NOT a guideline for
establishing causality?
Take into
consideration all the
● other possible
causes.
Perform a
randomized,
● controlled
experiment.
https://app.sophia.org/spcc/introduction-to-statistics-2/milestone_take_feedbacks/33677482 6/11/24, 5 04 AM
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:
, Keep all variables the
same to get duplicate
#
results.
Look for cases where
correlation exists
between the
●
variables of a
scatterplot.
RATIONALE
For causality, the association should be
something we observe in slightly varied
conditions. So if all variables and conditions
are the same, this is not a way to support
causality.
CONCEPT
→ Establishing Causality
Report an issue with this question
2
●
Which of the following scatterplots best shows
an outlier in BOTH the x- and y-direction?
https://app.sophia.org/spcc/introduction-to-statistics-2/milestone_take_feedbacks/33677482 6/11/24, 5 04 AM
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:
, ●
#
●
●
RATIONALE
To have an outlier in the x-direction and y-
direction the outlier must be outside of the
range of y data and outside the range of x-
data. This outlier is below in the y-direction
https://app.sophia.org/spcc/introduction-to-statistics-2/milestone_take_feedbacks/33677482 6/11/24, 5 04 AM
Page 3 of 34
:
, and to the left in the x-direction.
CONCEPT
→ Outliers and Influential Points
Report an issue with this question
3
●
The scatterplot below charts the performance of
an electric motor.
Which answer choice correctly indicates the
explanatory variable and the response variable
https://app.sophia.org/spcc/introduction-to-statistics-2/milestone_take_feedbacks/33677482 6/11/24, 5 04 AM
Page 4 of 34
:
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