
Lecture7MidTerm

Quiz
•
Mathematics
•
Professional Development
•
Hard
Mariam Metawe3
Used 1+ times
FREE Resource
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The median is the
same as the mean
second quartile
third quartile
none of the above
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
which of the following is affected by outliers, you can choose more than one answer
Coefficient of variation
Inter quartile range
Standard deviation
Standard error
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
observations considered outliers it it have values below
Q1-1.5(IQR)
Q1+1.5(IQR)
Q3-1.5(IQR)
Q3=+.5(IQR)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In simple linear regression if the independent variably (X) is categorical, this will be very informative model
True
False
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
if the relation between X and Y is as follwoing:
Y=a(logX)+b+e
Then a and b can't be estimated by linear regression
False
True
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In multiple regression, if the independent variables (Xs) are highly correlated, this is called a problem of
homoskedasticity
heteroscedasticity
multicollinearity
outliers
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
the calculation from the confusion matrix
TP/(FN+TP)
is called
Specificity
F1
Sensitivity
Recall
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