The answer is B
Explanation: In contrast, a computer's hard disk or SDD is its long-term memory, where things are stored more or less permanently. ... Nearly all computers also have some way to store information for longer-term access, too.
Answer:
- import math
-
- def standard_deviation(aList):
- sum = 0
- for x in aList:
- sum += x
-
- mean = sum / float(len(aList))
-
- sumDe = 0
-
- for x in aList:
- sumDe += (x - mean) * (x - mean)
-
- variance = sumDe / float(len(aList))
- SD = math.sqrt(variance)
-
- return SD
-
- print(standard_deviation([3,6, 7, 9, 12, 17]))
Explanation:
The solution code is written in Python 3.
Firstly, we need to import math module (Line 1).
Next, create a function standard_deviation that takes one input parameter, which is a list (Line 3). In the function, calculate the mean for the value in the input list (Line 4-8). Next, use the mean to calculate the variance (Line 10-15). Next, use sqrt method from math module to get the square root of variance and this will result in standard deviation (Line 16). At last, return the standard deviation (Line 18).
We can test the function using a sample list (Line 20) and we shall get 4.509249752822894
If we pass an empty list, a ZeroDivisionError exception will be raised.
Accurate and relevant information , a quick process
Answer:
b. RasmusLerdorf
Explanation:
RasmusLerdorf is the founder/developer of PHP. He created it in 1994. He is a Danish national who migrated to Canada in 1980.He implemented PHP to support his personal home page and the language continued to get extended by adding more and more functionality. The original language parser was redeveloped for version 3 in 1997. The latest release of PHP is 7.x made available since December 2015.
