Regressions Refresh

Quiz
•
Mathematics
•
9th - 12th Grade
•
Medium
+1
Standards-aligned
Austyn Jones
Used 2+ times
FREE Resource
13 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Actual - Predicted
Predicted - Actual
Answer explanation
R.A.P
Residual = Actual - Predicted
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
I predicted someone would lose 14 lbs, but they actually lost 12 lbs. Calculate the residual.
14 - 12 = 2
12 - 14 = -2
14 - 2 = 12
2 - 14 = -12
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
I predicted someone would score a 78% on their test, but they actually scored an 81%. Calculate the residual.
81 - 78 = 3
78 - 81 = -3
81 - 3 = 78
3 - 81 = -78
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
A residual plot compares the residual values (dependent variable) to the predicted values. Which of the following residual plots indicate that the regression model is a "good fit" to the data?
Select two residual plots.
Answer explanation
The residual plot of a linear scatter plot will have RANDOM scatter.
They do NOT have any patterns or clusters of points
5.
LABELLING QUESTION
30 sec • 1 pt
The regression equation y = 25x + 100 models the cost, y, of an event for x people.
The table shows what the party sizes actually paid. Complete the table with the predicted values and residuals.
6.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
The r2 value of the quadratic regression of this table is ...
r2=0.9789
r2=0.9515
r2=0.9754
r2=0.9613
Tags
R^2
7.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Calculate the correlation coefficient (round it correctly to THREE decimal places!), then interpret its meaning
r = -0.959
r = -0.958
r = 0.919
As the number of staff increases, the average time to fill orders decreases
As the number of staff increases, the average time to fill orders increases
Tags
Correlation Coefficient (r)
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