You are given 50 cards with five different colors- 10 Green cards, 10 Red Cards, 10 Orange Cards, 10 Blue cards, and 10 Yellow cards. The cards of each colors are numbered from one to ten. Two cards are picked at random. Find out the probability that the cards picked are not of same number and same color.

0 Answers   Facebook,

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How do you treat colinearity?

0 Answers   Amazon,

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What are the various types of selection bias?

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You have 2 dices. What is the probability of getting at least one 4? Also find out the probability of getting at least one 4 if you have n dices.

0 Answers   Facebook,

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Are expected value and mean value different?

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How decision tree algorithm is different from the random forest algorithm?

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What devices or tools help you most as a data scientist?

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Suppose that American Express has 1 million card members along with their transaction details. They also have 10,000 restaurants and 1000 food coupons. Suggest a method which can be used to pass the food coupons to users given that some users have already received the food coupons so far.

0 Answers   American Express,

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What is skewed distribution & uniform distribution?

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Explain the differences between univariate, bivariate and multivariate analysis?

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Can you explain data munging or data wrangling?

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How make you 3d plots/visualizations using numpy/scipy?

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