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Basic Statistics

Question 1

Which numpy function calculates the standard deviation of an array?

np.var()

np.std()

np.mean()

np.median()

Question 2

Which numpy function is used to calculate the variance of an array?

np.mean()

np.std()

np.var()

np.median()

Question 3

What does np.percentile() compute?

Standard deviation

Variance

Median

Percentiles

Question 4

Which numpy function is used to calculate the mean of an array?

np.average()

np.mean()

np.median()

np.var()

Question 5

What does np.argmax() return?

Minimum value in the array.

Maximum value in the array.

Index of the minimum value.

Index of the maximum value.

Question 6

What does np.median() function return?

Mode of the array.

Mean of the array.

Median of the array.

Variance of the array.

Question 7

Which numpy function is used to generate random numbers from a normal distribution?

np.normal()

np.random.normal().

np.randn()

np.random.randn().

Question 8

Which numpy function is used to calculate the covariance matrix?

np.cov()

np.corrcoef()

np.mean()

np.var()

Question 9

Which function can be used to find the minimum value in a numpy array?

np.min()

np.max()

np.argmin()

All of the above.

Question 10

What does np.histogram() return?

Mean and standard deviation.

Frequency distribution.

Variance

Percentiles

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