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.
Usually they'll add a link to the bottom of the page to the next page.
When permanent magnets of a motor are replaced with more powerful ones, the motor rotation will increase. This is because there is more electricity being generated.
Answer:
When the document is not saved before the application is closed, The word application assumes that the file is not important, so does not save a recovery file, but to recover the file open the application and go to the recently opened file, do not edit the file, go to the bottom of the document and click on recovery or use the CTRL-Z shortcut key.
Explanation:
Microsoft word is a word processing application used to make and edit word documents. The recovery option in the word application is an essential tool in Word that prevents a permanent loss of documents in production and can be used to retrieve saved and unsaved documents.
