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.
They are called FUNCTIONS. Hopefully I could help ;0
Explanation:
1. the intensities of each color beam
2. -
3. False
4. red
hope it helps!
Answer:
Spammers can infiltrate and use email notifications to camouflage malicious links.
Explanation:
A spammer is the one who sends spam emails to someone else. Spammer can send same email to a number of recipients many times over many days. Spammers gather email addresses from websites, newsgroups, chat rooms, and viruses that collect users address books. These gathered email addresses are often sold to other spammers. The main incentive of all spammers is money. Even the occurrence of new laws to control spam has not much effect on spammers.
Email spam also called junk email is unwanted bulk messages that are sent by spammer. Spamming also exerts on other media like internet forums, instant messaging, mobile text messaging etc. Spam email might be a malicious try to get access to someone's computer.
Spammers can be difficult to locate and stop as they can send spam email from botnets. Spammers often include links to the spam email or some attached files to verify that a person's email is legal. The links sent by spammers may contain malicious web pages or downloads. These malicious links can affect a person's computer with malware.
Answer:
Data can be stored on storage devices.
Explanation:
Network security, Application security and information security are the securities that protect data. Data can be stored on storage devices such as hard disk drives, solid state drives, external hard drives, USB flash drives and SD cards etc. Hard disk drives, floppy disks and tapes store data magnetically. The data can be stored with a device that spins the disk with magnetic coatings and heads has the ability to read and write information in the form of magnetic patterns.