Probability & Statistics Part I Lecture 09 Quiz

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Questions and Answers

What is the purpose of 'data cleaning' in probability and statistics?

  • To handle missing values (correct)
  • To read data
  • To generate random numbers
  • To write data

What is the difference between 'np.random.randint(0, 5)' and 'np.random.rand()' in numpy?

  • randint() generates random values in an array, while rand() generates a single random value.
  • There is no difference between them.
  • randint() generates a float value, while rand() generates an integer.
  • randint() generates a random value between 0 and 5, while rand() generates a random float between 0 and 1. (correct)

What does 'np.random.randint(0, 5, 3)' do in numpy?

  • Generates a single random integer between 0 and 5
  • Generates an array of size 3 filled with random integers between 0 and 5 (correct)
  • Generates an array of random floats of size 3
  • Generates a random integer between 0 and 5

What is the output of 'np.random.rand(5)' in numpy?

<p>An array of size 5 filled with random floats (C)</p> Signup and view all the answers

What does np.random.randint(0, 5, 3) output?

<p>Gives 3 random integers between 0 and 5 (A)</p> Signup and view all the answers

What is the characteristic of a random outcome?

<p>Not predictable in advance (D)</p> Signup and view all the answers

In probability, what must the sum of probabilities of all possible outcomes be?

<p>Equal to 1 (B)</p> Signup and view all the answers

What does np.random.choice([24,10,12,35,5]) output?

<p>Includes one of the values [24,10,12,35,5] (D)</p> Signup and view all the answers

What is the main characteristic of probability values?

<p>They must be between 0 and 1 (A)</p> Signup and view all the answers

What is np.random.rand(5) expected to output?

<p>Gives an array with 5 random float values (B)</p> Signup and view all the answers

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