Data scientist Interview Questions

Have you been hired? Did you complete the course? How long did they take to onboard you after your spss certification?

Can I have your number I need to talk to you..it's very urgent.. please help me

No I didn't take the course, but opted out before the final round.

If two squares are chosen at random on a chessboard, what is the probability that they have a side in common? - Did't answer Answer - The corner squares are the ones. There are 4 such squares. P(selecting such a square) = 4/64 Here also, let the event of selecting an adjacent square be C, P(C)= 2/63 Now, solving all the three cases and adding them will give us the answer. Answer: P(selecting a square adjacent to 4 squares)*P(A) + P(selecting a square adjacent to 3 squares)*P(B) + P(selecting a square adjacent to 2 squares)*P(C) (36/64)*(4/63) + (24/64)*(3/63) + (4/64)*(2/63) 1/18

While reversing the string. We start the loop from the initial value to the half of the string length then choose the first value and last values. Swap both the values.

Total number of pairs on a chessboard = 64C2 Number of adjacent pairs = (7*8)*2 - (explanation: Every column has 7 adjacent pairs, there are 8 columns, similarly for rows) Answer = (7*8*2)/(64C2) = 1/18

TPR and FPR

TPR on y-axis and FPR on x-axis

AUC (Area Under the Curve) can be anything.. ROC has TPR and FPR

Seriously?

Supervised is where we know what type of output we want. Unsupervised is where the Structure defines it's own output... Like shuffling cards of each group to one..

What other questions you was asked during the that discussion? nothing related to CNN , RNN, ML, Regression and classification?

Nothing about ML, RNN, CNN, I think she dnt know more about Data science. She told we are hiring who have experienced in data science. Without asking any question she were hiring for Sr Data Scientist. Nice company.

Take a difference list. a = [15,15,60,15,15,..] Drop ones that are not 15. b = [15,15,15,15] Take the length and multiply by 15. 15*len(b)/3600 to get hours.

Can you post a link to the question and solution?

i Explained all the projects.

Hi, what was the CTC you were offered? and how much experience you had before this in data science?