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Probability & Statistics Part I Lecture 09 Quiz

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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?

An array of size 5 filled with random floats Signup and view all the answers

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

Gives 3 random integers between 0 and 5 Signup and view all the answers

What is the characteristic of a random outcome?

Not predictable in advance Signup and view all the answers

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

Equal to 1 Signup and view all the answers

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

Includes one of the values [24,10,12,35,5] Signup and view all the answers

What is the main characteristic of probability values?

They must be between 0 and 1 Signup and view all the answers

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

Gives an array with 5 random float values Signup and view all the answers