Infosys Certified Data Science using Python Professional-Part2
Practice with real exam-pattern questions for Infosys Certified Data Science using Python Professional-Part2. Each question includes a detailed explanation to help you understand the concept, not just memorise the answer. Try 10 questions free — no login required.
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Join Premium10 Infosys Certified Data Science using Python Professional-Part2 practice questions with answers
Real Lex exam-pattern multiple-choice questions for the Infosys Certified Data Science using Python Professional-Part2 certification. Each question includes the correct answer. The full question bank is available to Premium members.
- Question 1
Select the correct range for Support and Confidence values
- ✓[0,1]Correct
- B[-1,0]
- C[-1,1]
- Question 2
In the mathematical Equation of Linear Regression Y = β1 + β2X + ϵ, (β1, β2) refers to
- ✓(X-intercept, Slope)Correct
- B(Slope, X-Intercept)
- C(Y-Intercept, Slope)
- D(slope, Y-Intercept)
- Question 3
Which of the following is used when the user/item matrix contain binary values?
- ✓Jaccard similarity Correct
- BCosine similarity
- Cpearson similarity
- DNone
- Question 4
What type of data would job levels at an organization be?
- ✓Nominal DataCorrect
- BOrdinal Data
- CBinary Data
- DContinuous Data
- Question 5
The predicted rate of response of the dependent variable to changes in the independent variable is called
- ✓Error Correct
- BRegression Equation
- CSlope
- DIntercept
- Question 6
In the trade-off between bias and variance we aim for,
- ✓High Variance, Low Bias Correct
- BLow Variance, High Bias
- CLow Variance, Low Bias
- DHigh Variance, High Bias
- Question 7
A geometric interpretation of a residual is the
- ✓Horizontal distance from a data point to the regression line. Correct
- BVertical distance from a data point to the regression line.
- CPerpendicular distance from a data point to the regression line.
- DNone
- Question 8
Suppose the random variable X can take on values −1, 0, and 1 with chance p^2 , 2p(1 − p) and (1-p)^2, respectively, for 0 ≤ p ≤ 1.
What is the expected value of X?- ✓2p(1-p) Correct
- B1-2p
- Cp^2
- D0
- Question 9
Which of the following functions is used to obtain the intersection of two or more dataframes?
- ✓mergeCorrect
- Bconcat
- Ciloc
- Dreset
- Question 10
Select all that apply: To determine whether the association rules discovered are sufficiently interesting enough, which of the following metrics can be used?
- ✓ConvictionCorrect
- BLeverage
- CLift
- DCovariance
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