Sophia Learning STAT1001: Introduction to Statistics Final Milestone Test Answered Attempt score 88% Fall 2024/2025.
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Course
Sophia Learning STAT1001: Intro to Statistics
Institution
Sophia Learning STAT1001: Intro To Statistics
1
22/25 that's 88% RETAKE
22 questions were answered correctly.
3 questions were answered incorrectly.
Jesse takes two data points from the weight
and feed cost data set to calculate a slope, or
average rate of change. A rat weighs 3.5
pounds and costs $4.50 per week to feed,
while ...
22 questions were answered correctly.
3 questions were answered incorrectly.
1
●
Jesse takes two data points from the weight
and feed cost data set to calculate a slope, or
average rate of change. A rat weighs 3.5
pounds and costs $4.50 per week to feed,
while a Beagle weighs 30 pounds and costs
$9.20 per week to feed.
Using weight as the explanatory variable, what
is the slope of the line between these two
points? Answer choices are rounded to the
nearest hundredth.
$1.60 / lb.
●
https://app.sophia.org/spcc/introduction-to-statistics-2/milestone_take_feedbacks/33814809 6/14/24, 9 12 AM
Page 1 of 41
:
, $5.64 / lb.
●
$0.31 / lb.
●
$0.18 / lb.
#
RATIONALE
In order to get slope, we can use the formula:
.
Using the information provided, the two
points are: (3.5 lb., $4.50) and (30 lb., $9.20).
We can note that:
CONCEPT
→ Linear Equation Algebra Review
2
●
Which of the following is a guideline for
establishing causality?
https://app.sophia.org/spcc/introduction-to-statistics-2/milestone_take_feedbacks/33814809 6/14/24, 9 12 AM
Page 2 of 41
:
, Do not consider
other possible
●
causes.
Check if the effect is
present when the
● response variable is
absent.
Keep all variables the
same to get duplicate
●
results.
Look for cases where
correlation exists
between the
#
variables of a
scatterplot.
RATIONALE
Recall that correlation is not sufficient alone to
assess causality, however it is necessary. So
for something to be causal, it must have a
strong association.
https://app.sophia.org/spcc/introduction-to-statistics-2/milestone_take_feedbacks/33814809 6/14/24, 9 12 AM
Page 3 of 41
:
, CONCEPT
→ Establishing Causality
3
●
Joe is measuring the widths of doors he bought
to install in an apartment complex. He
measured 72 doors and found a mean width of
36.1 inches with a standard deviation of 0.3
inches. To test if the doors differ significantly
from the standard industry width of 36 inches,
he computes a z-statistic.
What is the value of Joe's z-test statistic?
2.83
#
-2.83
●
-1.81
●
1.81
●
https://app.sophia.org/spcc/introduction-to-statistics-2/milestone_take_feedbacks/33814809 6/14/24, 9 12 AM
Page 4 of 41
:
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