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WorksheetsPredictive Modeling
Total questions: 20
Worksheet time: 11mins
Which of the following metrics can be used for evaluating regression models?
Variance
Standard Deviation
Statistics
RMSE
How many coefficients do you need to estimate in a simple linear regression model (One independent variable)?
1
2
3
4
Function used for linear regression in R is __________
lm(formula, data)
lr(formula, data)
lrm(formula, data)
regression.linear(formula, data)
In syntax of linear model lm(formula,data,..), data refers to ______
Matrix
Vector
Array
List
In the mathematical Equation of Linear Regression Y = β1 + β2X + ϵ, (β1, β2) refers to __________
(X-intercept, Slope)
(Slope, X-Intercept)
(Y-Intercept, Slope)
(slope, Y-Intercept)
Is Logistic regression a supervised machine learning algorithm?
TRUE
FALSE
Is it possible to apply a logistic regression algorithm on a 3-class Classification problem?
TRUE
FALSE
Which of the following methods do we use to best fit the data in Logistic Regression?
Least Square Error
Maximum Likelihood
Jaccard distance
Both A and B
Which of the following evaluation metrics can not be applied in case of logistic regression output to compare with target?
AUC-ROC
Accuracy
Logloss
Mean-Squared-Error
Consider a following model for logistic regression: P (y =1|x, w)= g(w0 + w1x) where g(z) is the logistic function.
In the above equation the P (y =1|x; w) , viewed as a function of x, that we can get by changing the parameters w.
What would be the range of p in such case?
A) (0, inf)
(-inf, 0 )
(0, 1)
(-inf, inf)
The below figure shows AUC-ROC curves for three logistic regression models. Different colors show curves for different hyper parameters values. Which of the following AUC-ROC will give best result?
Yellow
Pink
Black
All
Can a Logistic Regression classifier do a perfect classification on the below data?
TRUE
FALSE
Can't Say
None of these
EDA is used for ...............
Summarize main characteristics of data
Explain Data
Perform Analytics
None of these
What is exploratory data analysis?
A rigid framework by which we analyze data
An initial way by which we can get a feel for data
A type of purely quantitative method of data analysis
A set of scientific principles for analyzing data in a catego
Most often, EDA relies on _____.
visual techniques
assumptions
fixed models
testing for statistical significance
A histogram is
Is a bar chart.
Is a graphic representation of the frequency distribution of a qualitative or categorical variable.
is a graphic representation of the frequency distribution of a continuous variable.
Is an alternative to a pie chart.
Word clouds are like bubble charts in that words are sized according to some numerical measure?
TRUE
FALSE
WHAT IS THE PURPOSE OF BIRDS FLOCKING ANALYSIS?
Analyzing the Birds Flocking allow you cluster the group with similar elements to research more effective and accuracy
Analyzing the Birds Flocking allow you cluster the group with dissimilar elements to research more effective and accuracy
Analytics Technique
None of these
How to build Logistic Regression Model in python?
LogisticRegression()
LR( )
LRM( )
None of these
Logistic Regression Model based on................
Probability Based
Slope and Intercept point
Variance and SD
None of these
