There are several mathematical and statistical functions available in NumPy which can be very useful in manipulating the data of a matrix (dataset).
They are as below:
import numpy as np
mean()
Calculates mean of all the elements of the NumPy array, irrespective of the shape of the array.
X = np.array( [ [-2.5, 3.1, 7],
[10, 11, 12] ] )
print("mean = ", X.mean())
Output will be
6.766666666666667
var()
Calculates the variance of the elements of the NumPy array.
print("Variance = ", X.var())
Output will be
25.855555555555554
std()
Calculates the standard deviation of the elements of the NumPy array.
print("Standard Deviation = ", X.std())
Output will be
5.084835843520964
min()
Returns the minimum element in the NumPy array.
print("min = ", X.min())
Output will be
-2.5
max()
Returns the maximum element in the NumPy array.
print("max = ", X.max())
Output will be
12.0
sum()
Returns the sum of the elements of the NumPy array.
print("sum = ", X.sum())
Output will be
40.6
prod()
Returns product of the elements of the NumPy array.
print("product = ", X.prod())
Output will be
-71610.0
Please follow the below steps:
(1) Please import the required libraries
import numpy as np
(2) Please create a NumPy array X_stat with values [ [ 1, 2, 3], [ 4, -5, 6] ]
<< your code comes here >> = np.array( << your code comes here >> )
mean()
(3) Please calculate and print the mean of elements of this array X_stat
print("mean = ", <<your code comes here>>)
var()
(4) Please calculate and print the variance of elements of this array X_stat
print("Variance = ", <<your code comes here>>)
std()
(5) Please calculate and print the standard deviation of elements of this array X_stat
print("Standard Deviation = ", <<your code comes here>>)
min()
(6) Please calculate and print the min of elements of this array X_stat
print("min = ", <<your code comes here>>)
max()
(7) Please calculate and print the max of elements of this array X_stat
print("max = ", <<your code comes here>>)
sum()
(8) Please calculate and print the sum of elements of this array X_stat
print("sum = ", <<your code comes here>>)
prod()
(9) Please calculate and print the product of elements of this array X_stat
print("product = ", <<your code comes here>>)
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