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D Cube Analytics Interview Question | Data Format

Question
Dhruv2301 Dhruv2301
Explain the difference between "long" and "wide" format data. Why would you use one or the other?
0
Statistics 55 years 0 Answers 1006 views Great Grand Master

D Cube Analytics Interview Question | Error

Question
Dhruv2301 Dhruv2301
If we talk about Type-I and Type-II error, which of them will create critical mistakes in your data?
0
Statistics 55 years 0 Answers 758 views Great Grand Master

D Cube Analytics Interview Question | Mean Square Error

Question
Dhruv2301 Dhruv2301
Why is mean square error a bad measure of model performance? What would you suggest instead?
in progress 0
Statistics 55 years 1 Answer 801 views Great Grand Master

Dunzo Interview Question | Roulette

Question
Dhruv2301 Dhruv2301
A roulette wheel has 38 slots – 18 red, 18 black, and 2 green. You play four games and always bet on red slots. How many games can you expect to win?
in progress 0
Statistics 55 years 4 Answers 1018 views Great Grand Master

Dunzo Interview Question | Data Cleansing

Question
Dhruv2301 Dhruv2301
How does data cleaning play a vital role in analysis? Is it advisable to proceed without it?
in progress 0
Statistics 55 years 1 Answer 771 views Great Grand Master

Dunzo Interview Question | Random Variable

Question
Dhruv2301 Dhruv2301
How can you generate a random number between 1 – 7 with only a die?
0
Statistics 55 years 0 Answers 814 views Great Grand Master

Dunzo Interview Question | Standard Deviation

Question
Dhruv2301 Dhruv2301
You are given a data set. The data set has missing values which spread along 1 standard deviation from the median. What percentage of data would remain unaffected? Why?
in progress 0
Statistics 55 years 1 Answer 880 views Great Grand Master

Samsung Interview Question | Ace

Question
Dhruv2301 Dhruv2301
What is the expected number of draws from a standard deck until you see an ace?
0
Statistics 55 years 0 Answers 674 views Great Grand Master

Samsung Interview Question | Long-Term Behaviour

Question
Dhruv2301 Dhruv2301
A population dies out with p = 0.2. It remains stable with p = 0.5. It doubles with p = 0.3. What is the expected long-term behaviour of the population?
0
Statistics 55 years 0 Answers 734 views Great Grand Master

Nvidia Interview Question | Same Marble

Question
Dhruv2301 Dhruv2301
A jar contains 4 marbles. 3 Red & 1 white. Two marbles are drawn with replacement after each draw. What is the probability that the same color marble is drawn twice?
in progress 1
Statistics 55 years 4 Answers 1257 views Great Grand Master
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