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Data Science interview questions part 3
Data Science interview questions part 3
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Take as many assements as you can to improve your validate your skill rating
Total Questions: 20
1. What is the postfix expression for the infix expression? a-b-c
A. Git
B. NumPy
C. Slidify
D. None of the mentioned
Show Correct Answer
Correct Answer is :
Git
2. What is the postfix expression for the following infix expression? a/b^c-d
A. GitHub
B. Git Bash
C. Git Boot
D. All of the mentioned
Show Correct Answer
Correct Answer is :
Git Bash
3. Which of the following statement is incorrect with respect to infix to postfix conversion algorithm?
A. GitHub
B. Open Hash
C. Git Bash
D. None of the mentioned
Show Correct Answer
Correct Answer is :
GitHub
4. In infix to postfix conversion algorithm, the operators are associated from?
A. TRUE
B. FALSE
C.
D.
Show Correct Answer
Correct Answer is :
TRUE
5. What is the corresponding postfix expression for the given infix expression? a*(b+c)/d
A. git add .
B. git add -u
C. git add -A
D. none of the Mentioned
Show Correct Answer
Correct Answer is :
git add .
6. What is the corresponding postfix expression for the given infix expression? a+(b*c(d/e^f)*g)*h)
A. You don’t need GitHub to use Git
B. CLI can help you to organize files and folders
C. Navigation of directory is possible using CLI
D. None of the Mentioned
Show Correct Answer
Correct Answer is :
CLI can help you to organize files and folders
7. What is the correct postfix expression for the following expression? a+b*(c^d-e)^(f+g*h)-i
A. git add .
B. git add -u
C. git add -A
D. none of the Mentioned
Show Correct Answer
Correct Answer is :
git add -u
8. From the given Expression tree, identify the correct postfix expression from the list of options.
A. git command -m
B. git command -d
C. git command -message
D. none of the Mentioned
Show Correct Answer
Correct Answer is :
git command -m
9. What data structure is used when converting an infix notation to prefix notation?
A. You need GitHub to use Git
B. GitHub allows you to share repositories with others
C. GitHub allows you to access others repositories
D. All of the Mentioned
Show Correct Answer
Correct Answer is :
You need GitHub to use Git
10. What would be the Prefix notation for the given equation? A+(B*C)
A. push
B. pop
C. update
D. none of the Mentioned
Show Correct Answer
Correct Answer is :
push
11. What would be the Prefix notation for the given equation? (A*B)+(C*D)
A. Fork another user’s repository
B. Pop another user’s repository
C. Zip another user’s repository
D. None of the Mentioned
Show Correct Answer
Correct Answer is :
Fork another user’s repository
12. What would be the Prefix notation for the given equation? A+B*C^D
A. rebase
B. squash
C. boot
D. all of the Mentioned
Show Correct Answer
Correct Answer is :
rebase
13. Out of the following operators (^, *, +, &, $), the one having highest priority is _________
A. git checkout -b sanfoundry
B. git checkout -c sanfoundry
C. git check -b sanfoundry
D. none of the Mentioned
Show Correct Answer
Correct Answer is :
git checkout -b sanfoundry
14. Out of the following operators (|, *, +, &, $), the one having lowest priority is ________
A. TRUE
B. FALSE
C.
D.
Show Correct Answer
Correct Answer is :
TRUE
15. What would be the Prefix notation for the given equation? A^B^C^D
A. pct_change
B. percent_change
C. per_change
D. none of the Mentioned
Show Correct Answer
Correct Answer is :
pct_change
16. What would be the Prefix notation for the given equation? a+b-c/d&e|f
A. Pandas represents timestamps in microsecond resolution
B. Pandas is 100% thread safe
C. For Series and DataFrame objects, var normalizes by N-1 to produce unbiased estimates
D. All of the Mentioned
Show Correct Answer
Correct Answer is :
For Series and DataFrame objects, var normalizes by N-1 to produce unbiased estimates
17. What would be the Prefix notation for the given equation? (a+(b/c)*(d^e)-f)
A. Series
B. DataFrame
C. Panel
D. None of the Mentioned
Show Correct Answer
Correct Answer is :
Series
18. What would be the Prefix notation for the given equation? A+B+C
A. min_periods
B. max_periods
C. minimum_periods
D. all of the Mentioned
Show Correct Answer
Correct Answer is :
min_periods
19. What would be the Prefix notation for the given equation? a|b&c
A. lxml is very fast
B. lxml requires Cython to install correctly
C. lxml does not make any guarantees about the results of it’s parse
D. none of the Mentioned
Show Correct Answer
Correct Answer is :
lxml does not make any guarantees about the results of it’s parse
20. For the tree below, write the in-order traversal.
A. corrwith
B. corwith
C. corwit
D. none of the Mentioned
Show Correct Answer
Correct Answer is :
corrwith
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