• Ask an Expert
• Get a Professional Answer
• 100% Satisfaction Guarantee
Sk1llz, Mastermind
Category: Finance
Satisfied Customers: 2328
Experience:  Mathematics, Statistics and Physics
386534
Type Your Finance Question Here...
Sk1llz is online now

# The normal distribution is the most important probability ...

### Resolved Question:

The normal distribution is the most important probability distribution in the world of statistics. What are the properties of this distribution that make it so powerful and important in statistical analysis?

Optional Information:
Orlando, Florida

Submitted: 10 years ago.
Category: Finance
Expert:  Sk1llz replied 10 years ago.
There are three main reasons for this fact:

1. The first reason is directly linked to the mathematical properties of the distribution. If a random sample is taken from a normal distribution, then the distributions of various important functions of the observations can be derived explicitly and will have simple forms. Therefore, it is a mathematical convenience to be able to assume that the distribution from which a random sample is drawn is a normal distribution.

2. The second reason is that many scientist have observed that the random variables obtained from various experiments often can be very well approximated with the normal distribution.

3. The third reason is the central limit theorem. In short it states that if a random sample is taken from some distribution, then even though this distribution is not itself approximately normal, several important functions of the observations in the sample will have a distribution that is approximately normal.

Sk1llz, Mastermind
Category: Finance
Satisfied Customers: 2328
Experience: Mathematics, Statistics and Physics
Sk1llz and other Finance Specialists are ready to help you

### JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

### What Customers are Saying:

• I really was impressed with the prompt response. Your expert was not only a tax expert, but a people expert!!! Her genuine and caring attitude came across in her response... T.G.W Matteson, IL
< Previous | Next >
• I really was impressed with the prompt response. Your expert was not only a tax expert, but a people expert!!! Her genuine and caring attitude came across in her response... T.G.W Matteson, IL
• I WON!!! I just wanted you to know that your original answer gave me the courage and confidence to go into yesterday's audit ready to fight. Bonnie Chesnee, SC
• Great service. Answered my complex tax question in detail and provided a lot of additional useful information for my specific situation. John Minneapolis, MN
• Excellent information, very quick reply. The experts really take the time to address your questions, it is well worth the fee, for the peace of mind they can provide you with. Orville Hesperia, California
• Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
• This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
• Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA

• ### Rakhi Vasavada

#### Satisfied Customers:

2489
Graduated in law with Emphasis on Finance and have have been working in financial sector for over 12 Years
< Last | Next >

#### Satisfied Customers:

2489
Graduated in law with Emphasis on Finance and have have been working in financial sector for over 12 Years

### Megan C

#### Satisfied Customers:

2210
Licensed CPA, CFE, CMA, CGMA who teaches accounting courses at Master's Level

### Manal Elkhoshkhany

#### Satisfied Customers:

1905
More than 5000 online tutoring sessions.

### JKCPA

#### Satisfied Customers:

843
Bachelors degree and CPA with Accounting experience.

### Eric

#### Satisfied Customers:

559
Loan servicing, counseling and real estate expert. Foreclosure Expert and Financial Planner.

### R. Klein, EA

#### Satisfied Customers:

480
TurboTax Expert. QuickBooks Certified Pro Advisor