Answer:
class Person(object):
def __init__(self, name, age):
self.name = name
self.age = age
def std_dev(person_list):
average = 0
for person in person_list:
average += person.age
average /= len(person_list)
total = 0
for person in person_list:
total += (person.age - average) ** 2
return (total / (len(person_list) )) ** 0.5
Explanation:
The class "Person" is a python program class defined to hold data of a person (name and age). The std_dev function accepts a list of Person class instances as an argument and returns the calculated standard deviation of the population.
<span>In the 219th meeting of the American
Astronomical Society, it was said that "Earth" is the plant that's
borders were recognizable from space.
</span>Former NASA astronaut John Grunsfeld said that these are visible in the
form of environmental differences.
<span>He busted a myth also that The Great
Wall of China is visible from space, he denied it.</span>
Answer:
a[0]=2*a[a.length-1];
Explanation:
In the following statement, we initialize a new value to the integer data type array variable 'a' by passing the index value 0 with the variable inside the square brackets [] because the array indexing starts with 0, so the array indexing of the first element is 0 and then initialize the value that is equal to the twice of that element which is in the last.
Silicon is the conductive material used in making Computer Chips. Krypton only exists in the DC Universe, Granite is a rock and Boron is used for rocket thruster ignitors and other pyrotechnic things.
Some external computer parts that are inputs:
Keyboard
Mouse
Microphone
Camera
Joystick
Touch screen monitor