How To's
How to learn simulation and modeling
How can I learn simulation?
Learn about Simulation
EdX.org offers courses in a variety of simulation areas, from computer science to simulation scenarios in specific fields. You can take courses from your home and on your own time, yet learn from some of the biggest thinkers and institutions in the field.
What is the difference between simulation and Modelling?
Modeling is the act of building a model. A simulation is the process of using a model to study the behavior and performance of an actual or theoretical system. In a simulation, models can be used to study existing or proposed characteristics of a system.
How do I learn computer model?
To find the computer model number with System Information, use these steps:
 Open Start.
 Search for System Information and click the top result to open the app.
 Click on System Summary.
 Confirm the model number of your device under the “System Model” field. Source: Windows Central.
What is an example of a computer model?
A computer model is a representation of a reallife system or situation, such as the workings of a nuclear reactor or the evacuation of a football stadium. For example, before a new football stadium is built, a computer model could be used to see if there are enough fire exits and if they’re in the safest places.
What is my PC model?
Click on the Start button, rightclick on “Computer” and then click on “Properties”. This process will display the information about the laptop’s computer make and model, operating system, RAM specifications, and processor model.
How do I find the make and model of my computer Windows 10?
Windows 10
In the Search Box, type System. In the list of search results, under settings, select System. Look for Model: in the System section.
What is a good configuration for a laptop?
Unless you’re buying a really inexpensive laptop, go for a 1080p screen, a Core i5 CPU, at least 8GB of RAM and an SSD that has 256GB or more.
How do I find the name of my laptop?
Click on the Start button. In the search box, type Computer. Right click on This PC within the search results and select Properties. Under Computer name, domain, and workgroup settings you will find the computer name listed.
What is this device name?
Alternatively known as a device file or special file, a device name is an identification that is given to the physical hardware device assigned by the operating system. A device name provides an interface to peripheral devices such as parallel and serial ports, or access to a disk partition.
How do I find my device name?
On Android
 Go to Settings > About phone.
 Check under Device Name.
How do I find IP address on laptop?
Open the Windows Start menu and rightclick “Network.” Click “Properties.” Click “View Status” to the right of “Wireless Network Connection,” or ”Local Area Connection” for wired connections. Click “Details” and look for the IP address in the new window.
How can I see my IP address?
On an Android smartphone or tablet: Settings > Wireless & Networks (or “Network & Internet” on Pixel devices) > select the WiFi network that you’re connected to > Your IP address is displayed alongside other network information.
Where can I find my IP address on my HP laptop?
The Windows 10 method:
 Open up your HP Windows laptop.
 Press the Windows key.
 Search for an open Settings.
 Select Network & Internet.
 Select either WiFi or Ethernet, depending on your connection type.
 Select the network you’re connected to.
 Scroll down the page and you’ll find your IP address and the DNS you’re connected to.
How do I find my IP address on my laptop using command prompt?
 From the desktop, navigate through; Start > Run> type “cmd.exe”. A command prompt window will appear.
 At the prompt, type “ipconfig /all”. All IP information for all network adapters in use by Windows will be displayed.
What are the ipconfig commands?
Syntax IPCONFIG /all Display full configuration information. IPCONFIG /release [adapter] Release the IP address for the specified adapter. IPCONFIG /renew [adapter] Renew the IP address for the specified adapter. IPCONFIG /flushdns Purge the DNS Resolver cache.
How do I find my IP address on my laptop Windows 10?
Find your IP address
 On the taskbar, select WiFi network > the WiFi network you’re connected to > Properties.
 Under Properties, look for your IP address listed next to IPv4 address.
What is the command for nslookup?
Go to Start and type cmd in the search field to open the command prompt. Alternatively, go to Start > Run > type cmd or command. 1. Type nslookup and hit Enter.
What is netstat command?
The network statistics ( netstat ) command is a networking tool used for troubleshooting and configuration, that can also serve as a monitoring tool for connections over the network. Both incoming and outgoing connections, routing tables, port listening, and usage statistics are common uses for this command.
Can you do nslookup online?
Using nslookup online is very simple. Enter a domain name in the search bar above and hit ‘enter’. This will take you to an overview of DNS records for the domain name you specified. Behind the scenes, NsLookup.io will query a DNS server for DNS records without caching the results.
How do I trace an IP address to a domain?
Run a traceroute (tracert) command using Windows
 Select Start > Run.
 Type ‘cmd’ then click OK.
 Type ‘tracert’ followed by a space and the domain name or IP address (for example: tracert example.com or tracert 10.0. 2.1).
 Press the Enter key to run the command.
How To's
Types of mosquito bites
What do mosquito bites look like?
A puffy and reddish bump appearing a few minutes after the bite. A hard, itchy, reddishbrown bump, or multiple bumps appearing a day or so after the bite or bites. Small blisters instead of hard bumps. Dark spots that look like bruises.
When should you worry about a mosquito bite?
Seek emergency medical treatment right away if you notice any of the following symptoms after a mosquito bite: a fever of 101°F (38.3°C) or higher. rash. conjunctivitis, or eye redness.
What do mosquito bites look like on humans?
A mosquito bite is a small, round, puffy bump that appears soon after you’ve been bitten. The bump will become red, hard, swollen, and itchy. You may have multiple bites in the same area.
What smell do mosquitoes hate the most?
Wearing scented oils mosquitoes dislike can be one way to keep them away from your skin (and your blood). One of the most famous scents that mosquitoes despise is citronella.
How can I avoid getting bitten by mosquitoes?
7 ways to prevent mosquito bites
 Dump out any standing water near your home.
 Keep mosquitoes outside.
 Use mosquito repellent.
 Wear lightcolored clothing, especially outdoors.
 Stay indoors during dusk and dawn.
 Make yourself less appealing.
 Try a natural repellent.
How To's
How to start a deer farm
How profitable is deer farming?
The best profits come from raising deer for hunting. Preserves pay from $800 to $40,000 for bucks 2 1/2 years and older. “About 90 percent that are sold, score 190 or less. A lot of growers try to raise the biggest deer,” McIntosh says.
How many acres do you need to start a deer farm?
Farm Layout
Since deer adapt well to most terrain, acreage suitable for deer farming may be relatively inexpensive. On one prime acre of land, you may accommodate23 adult whitetail deer, 710 adult fallow deer, 47 adult red deer, 78 axis deer and 12 elk.
Is deer breeding profitable?
Yes, landowners in many states raise fencedin deer as domestic livestock. The reasons for raising deer in large pens are primarily financial. Farmers sell everything from antlers, velvet, urine, and venison to controlled hunts and breeding stock. Bucks with trophy antlers can fetch prices in six figures.
Are deer easy to farm?
While there are startup costs involved with getting into deer production, with high fences needed to keep the animals enclosed, in many instances existing shearing sheds and yards can be altered to accommodate deer handling facilities. “They are relatively easy animals to farm,” Mike said.
Why are there no deer farms?
Originally Answered: Why don’t we farm raise deer for meat? Mainly it’s because they haven’t had millennia of domestication. They haven’t been bred for maximum feed conversion or to be easy to handle. You can’t transport them live to an abattoir, they get too stressed, so they have to be shot on the farm.
Are deer good pets?
Even when bred in captivity, deer do not make good pets. While they can be tamed, and they are small, manageable and adorable at first, they become unmanageable and wary as they mature. Domesticated deer may attack humans during mating season, and they can also turn dangerous to protect their young.
Will a deer bite you?
Even though they are very used to the presence of humans, they have not been domesticated and they aren’t pets. If they don’t like what you are doing to them they will bite or kick. In this case, the deer might bite or kick and might cause severe injuries.
Will deers attack you?
Yes, the deer do attack humans, and this is dependent on particular situations. They may feel the humans are invading their territory when protecting their fawn or during the rutting season (mating). Deer are not as docile as they tend to look.
Are deers friendly to humans?
Deer and Humans Relationship. Deer are very loyal to their territory and that creates problems for them and humans all the time. People are building homes and establishing farms in the areas where these animals used to freely live.
Can you touch a deer?
In almost every case, the fawn has not been abandoned by its mother. Don’t touch it or pet it. Finding and petting newly born animals is another problem because the animal’s survival depends on it being left alone. If you touch it, you may leave your scent on the animal, which could draw predators to it.
What does it mean when a deer stares at you?
When a deer is staring at you, it is also assessing your general movements. If you make a rapid movement the deer is likely to flee unless it feels you are far enough away to pose no risk. If you are a hunter, when a deer stares at you, the game is up, and the deer knows you are there.
Why are some deer not afraid of humans?
Nevertheless the deer are not afraid of us because we hunt them. They don’t know that. They just run because they don’t know what danger we may impose. They are not tamed.
How do you befriend a deer?
If you want to be friends with deer steer clear of feeding with blocks. Plant some local forage or fruit trees. A deer is more likely to eat a whole apple that has fallen from a tree naturally. The block on the other hand is just a recipe for spreading disease.
Why are deer not afraid of cars?
Deer have more photoreceptors in the retina. This means they have phenomenal night vision. But it also makes them susceptible to freezing in the road when they look directly into oncoming headlights; they don’t move because they, literally, are blinded by the light.
Do deer eliminate humans?
Deer–vehicle collisions lead to about 200 human deaths and $1.1 billion in property damage every year.
What animal has killed the most humans?
List
Source: CNET  

Animal  Humans killed per year  
1  Mosquitoes  1,000,000 
2  Humans (homicides only)  475,000 
3  Snakes  50,000 
Can a human eliminate a deer with bare hands?
Question: Can I kill a deer with my bare hands? “The only legal method in taking a deer is with a rifle, muzzle loader, or bow and arrow, or shotgun. Essentially, firearms or a bow and arrow or a crossbow.”
Do deers eliminate more people than bears?
Still, death by animal remains pretty rare in America: The odds of an animal killing you are one in nearly 1.4 million. Within those odds, however, deer are more likely to cause deaths than other animals — more than dogs, bears, sharks, and alligators combined, according to the LCB analysis.
Can a deer eliminate a dog?
According to the Intertubes, such attacks are not at all uncommon. Deer have been known to pummel dogs, people and sometimes even skateboarders (less of an attack, than a collision, methinks, but still pretty darned gnarly).
What animal is killed the most for food?
Animal slaughter is the killing of animals, usually referring to killing domestic livestock. It is estimated that each year 77 billion land animals are slaughtered for food.
Animal slaughter.
Animals  Number Killed 

Chickens  61,171,973,510 
Ducks  2,887,594,480 
Pigs  1,451,856,889 
Rabbits  1,171,578,000 
Are buck deer dangerous?
In addition to generally being a nuisance by eating, trampling and defecating on landscaping and gardens, deer can also be dangerous to human beings and other domestic animals, particularly dogs.
Are deers smart?
Are deer really that smart? Keen senses of smell, vision, and hearing have a lot to do with deer “intelligence.” Deer often sense the presence of hunters long before hunters sense them. Those individuals, males and females, that are most wary and hypervigilant, tend to survive hunting seasons.
How To's
Difference between one tailed and two tailed
What is the difference between onetailed and two tailed test?
A one–tailed test is used to ascertain if there is any relationship between variables in a single direction, i.e. left or right. As against this, the two–tailed test is used to identify whether or not there is any relationship between variables in either direction.
What is a two tailed test?
In statistics, a two–tailed test is a method in which the critical area of a distribution is two–sided and tests whether a sample is greater than or less than a certain range of values. It is used in nullhypothesis testing and testing for statistical significance.
How do you determine if a hypothesis is two tailed?
A two–tailed test will test both if the mean is significantly greater than x and if the mean significantly less than x. The mean is considered significantly different from x if the test statistic is in the top 2.5% or bottom 2.5% of its probability distribution, resulting in a pvalue less than 0.05.
How do you tell if a test is two tailed left tailed or right tailed?
Before you can figure out if you have a left tailed test or right tailed test, you have to make sure you have a single tail to begin with. A tail in hypothesis testing refers to the tail at either end of a distribution curve. Area under a normal distribution curve. Two tails (both left and right) are shaded.
Is left or right tailed?
Depending on the alternative hypothesis operator, greater than operator will be a right tailed test, less than operator is a left tailed test, and not equal operator is a two tailed test. Alternative hypothesis has the greater than operator, right tailed test.
What does left tailed mean?
A Hypothesis Test where the rejection region is located to the extreme left of the distribution. A left–tailed test is conducted when the alternative hypothesis (H_{A}) contains the condition H_{A} < x (less than a given quantity).
What does a lefttailed test mean?
A left–tailed test is a test to determine if the actual value of the population mean is less than the hypothesized value. After you calculate a test statistic, you compare it to one or two critical values, depending on the alternative hypothesis, to determine whether you should reject the null hypothesis.
How do you know which tailed test to use?
A twotailed test is appropriate if you want to determine if there is any difference between the groups you are comparing. For instance, if you want to see if Group A scored higher or lower than Group B, then you would want to use a twotailed test.
How do you know when to reject the null hypothesis?
After you perform a hypothesis test, there are only two possible outcomes. When your pvalue is less than or equal to your significance level, you reject the null hypothesis. The data favors the alternative hypothesis. When your pvalue is greater than your significance level, you fail to reject the null hypothesis.
When you reject the null hypothesis is there sufficient evidence?
It is also called the research hypothesis. The goal of hypothesis testing is to see if there is enough evidence against the null hypothesis. In other words, to see if there is enough evidence to reject the null hypothesis. If there is not enough evidence, then we fail to reject the null hypothesis.
How do you reject the null hypothesis with p value?
If the p–value is less than 0.05, we reject the null hypothesis that there’s no difference between the means and conclude that a significant difference does exist. If the p–value is larger than 0.05, we cannot conclude that a significant difference exists. That’s pretty straightforward, right? Below 0.05, significant.
What does reject the null hypothesis mean?
If there is less than a 5% chance of a result as extreme as the sample result if the null hypothesis were true, then the null hypothesis is rejected. When this happens, the result is said to be statistically significant .
How do you reject the null hypothesis in t test?
If the absolute value of the tvalue is greater than the critical value, you reject the null hypothesis. If the absolute value of the tvalue is less than the critical value, you fail to reject the null hypothesis.
What is meant by a type 1 error?
Simply put, type 1 errors are “false positives” – they happen when the tester validates a statistically significant difference even though there isn’t one. Source. Type 1 errors have a probability of “α” correlated to the level of confidence that you set.
Is P value the same as standard deviation?
The spread of observations in a data set is measured commonly with standard deviation. The bigger the standard deviation, the more the spread of observations and the lower the P value.
What does P mean in standard deviation?
Find the standard deviation for the following binomial distribution: flip a coin 1000 times to see how many heads you get. Step 1: Identify n and p from the question. N is the number of trials (given as 1000) and p is the probability, which is .
How do you interpret standard deviation?
A low standard deviation indicates that the data points tend to be very close to the mean; a high standard deviation indicates that the data points are spread out over a large range of values.
What is a good standard deviation?
For an approximate answer, please estimate your coefficient of variation (CV=standard deviation / mean). As a rule of thumb, a CV >= 1 indicates a relatively high variation, while a CV < 1 can be considered low. A “good” SD depends if you expect your distribution to be centered or spread out around the mean.
What is the relationship between mean and standard deviation?
The standard deviation (SD) measures the amount of variability, or dispersion, from the individual data values to the mean, while the standard error of the mean (SEM) measures how far the sample mean (average) of the data is likely to be from the true population mean. The SEM is always smaller than the SD.
What is a good standard deviation for blood sugar?
Dr. Hirsch suggests that diabetics should aim for an SD of onethird of their mean blood sugar. So, if your mean blood sugar were 120 mg/dl, you would want your standard deviation to be no more than 40 mg/dl, or onethird of the mean.
Is higher standard deviation riskier?
The higher the standard deviation, the riskier the investment. In a normal distribution, individual values fall within one standard deviation of the mean, above or below, 68% of the time. Values are within two standard deviations 95% of the time.
What is the easiest way to find standard deviation?
 The standard deviation formula may look confusing, but it will make sense after we break it down.
 Step 1: Find the mean.
 Step 2: For each data point, find the square of its distance to the mean.
 Step 3: Sum the values from Step 2.
 Step 4: Divide by the number of data points.
 Step 5: Take the square root.
Why is standard deviation important?
Things like heights of people in a particular population tend to roughly follow a normal distribution. Standard deviations are important here because the shape of a normal curve is determined by its mean and standard deviation. The mean tells you where the middle, highest part of the curve should go.
What does a low standard deviation mean?
Low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out. A standard deviation close to zero indicates that data points are close to the mean, whereas a high or low standard deviation indicates data points are respectively above or below the mean.

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