What are the feature vectors?


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More Data Science Interview Questions

Why we need ggplot?

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Explain the difference between overfitting and underfitting?

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How do data scientists use statistics?

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You have a bag with 6 marbles. One marble is white. You reach the bag 100 times. After taking out a marble, it is placed back in the bag. What is the probability of drawing a white marble at least once?

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What is meant by lattice graphs?

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There are 8 identical balls and only one of the ball is slightly heavier than the others. You are given a balance scale to find the heavier ball. What is the least number of times you have to use the balance scale to find the heavier ball?

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what is the difference between extrapolation and interpolation?

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Differentiate between type I and type ii error?

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What is the role of the activation function?

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What is logistic and linear regression? Name some packages in r and python for building regression models.

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What is random forests and how is it different from decision trees?

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What do you understand by parametric and non-parametric methods? Explain with examples.

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