In 1839, Talbot released the paper-based process which he called

For this problem, you will write a function standard_deviation that takes a list whose elements are numbers (they may be floats

Evgesh-ka [11]

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.

3 0

3 years ago

You must lower your high beams when within how many feet of an approaching vehicle?

drek231 [11]

2000 feet of any vehicle

7 0

3 years ago

Describe and list advantages and disadvantages of each of the following backup types:

crimeas [40]

Answer:

Full back up

It creates complete copy of the source of data. This feature made it to the best back up with good speed of recovery of the data and simplicity.However, because it is needed for backing up of a lot of data, it is time consuming process,Besides it also disturbs the routine application of the technologist infrastructure. In addition large capacity storage is needed for the storage of the large volume of back up with each new creation.

Incremental back up: back up work at high speed thus saves time, Little storage capacity is needed. This type of back up can be run as many time as wished.

However, the restoration of data takes time, due to the time spent for restoration of initial back up and the incremental.

Differential Back up has very fast back up operation, because it only requires two pieces of back up.This is however slower compare to the Incremental.

The selective back up enable selection of certain type of file or folders for back up.

it can only be used to back up folders only when important data are needed only.Thus the storage capacity is low.

CPD eliminates back up window and reduces the recovery point objective.However, it has issue of compatibility with the resources to back up.,it is also expensive because its solutions are disk based.

Cloud based is affordable and save cost,It is easier to access. it is efficient,it can be access remotely for convenience.

However, Internet sources and some bandwidth must be available for access., always depends on third party providers,There is also problems encountered when switching providers.

Explanation:

8 0

3 years ago

Please try and solve this

Genrish500 [490]

Answer:

Many students coming into Woodworking 108 are bewildered by “all those little marks ... Parts of an inch will be referred to in fraction form instead of its decimal equivalent. ... on divisions of 2: 1” 2= ½”. ½” 2= ¼”. ¼” 2= 1/8”. 1/8” 2= 1/16”. 1/16” 2= 1/32” ... way is to realize there are 16/16 in an inch and count back 3 of the 1/16 ...

Explanation:

4 0

3 years ago

________ is a markup language that allows for tagging selected elements of the content of documents for their meanings and is us

trasher [3.6K]

Answer:

E)nXML

Explanation:

XML is a short for Extensible Markup Language. It is a markup language like the Hypertext markup language (HTML) and are both used in the development of web applications. However while the HTML describes the content of the Web page that is the graphics, images and videos and how they are displayed, the XML handles the description of data and information formats, their storage and the transportation and sharing over the internet.

4 0

3 years ago

Read 2 more answers

In 1839, Talbot released the paper-based process which he called _ to the public.