How to do curve fitting in MATLAB

For simple curve fitting I use interpolation methods like polynomial fit or spline fitting like Rafael Cabral mentioned here.But for more complex situations, like fitting real process data to a mathematical model, I usually use Curve Fitting via

How is statistics used in sports?

In tons of ways. Indeed, there is even a specialty just for people who specialize in statistics about baseball: Sabermetrics. Statistics is used to rate players, decide on who gets cut from the team, decide who plays on which days and against which teams and with which teammates. It's used in salary arbitration,

What does the divorce rate of a country suggest about its society?

I think it says something about the sophistication of that nation's economy and/or the level of religious cohesion. Many nations with high divorce rates are industrialized or highly technological societies. A preponderance of non first world countries with higher divorce rates are communist or formerly communist nations,

What is the divorce rate in people who marry their high school sweethearts?

This question cannot be answered with routinely collected statistics.It depends on:When they married (age). It matters statistically.I knew one couple who were high school sweethearts, she married and had a family with another man and when her first husband died, she and her never-married high school sweetheart got married. Their marriage lasted over 25 years until her death.Did

What is the most unhealthy country?

I agree with User-13316523124916272238, you might want to be more precise with what you mean by "unhealthy".If we focus on issues like pollution and unsanitary living conditions, etc, I believe China would be a candidate here.Google "Pollution in China" and you would see rivers that are so full

What percentage of marriage (in the USA) ends in divorce?

The percentage of marriages in the USA that end in divorce is a little bit of a tricky question, and one the media often skews.  You hear about nearly half the marriages failing in the USA, that's partially true.The truth is the statistics are

Why are divorce rates on the rise? Is there a correlation between affluence and divorce rates?

Before you ask why, ask if.Divorce rates are not on the rise in the USA, they are declining.Now as to your second question, the poor are more likely to get divorced than the middle and upper classes. Financial strain negatively affects a marriage. But that doesn't mean wealth preserves it, just that the lack of

70% of gym members take at least one fitness class and have a personal trainer. 18% have a personal trainer. What's the probability of one randomly selected member taking a fitness class given that they have a personal trainer?

How can the ratio of people "who have a personal trainer" be smaller than the ratio "who have a personal trainer and take fitness class"? Should not the latter, by logic, be smaller than the former?Let me forget the numbers you

How is statistics used in education?

The field of education has a number of challenges in terms of policy planning, and statistics are particularly important as they often provide some of the only objective information that administrators use when making organizational and curricular decisions. Without this hard data in

How many travelers book online?

Business travelers use a variety of devices to book hotels for business trips with four in ten (39 percent) using their smart phones to book a hotel in the past six months. This doesn't quite reach the popularity of using laptops or desktops – at 58 percent and 43 percent respectively – but it does outshine the number who

Is human behavior deterministic?

Probably, modulo a bit of quantum mechanics (QM). QM forbids you from actually conducting an experiment in which things were exactly equal both times.  The no-clone theorem forbids you from precisely duplicating any quantum state, and renders the whole idea of doing the "reset" kind of

What is the difference between classical correlation and quantum correlation?

Great question. The short answer is that classical correlation - which I intentionally call

What are the best companies for a data scientist to work for?

DATA SCIENCE is a combination of business knowledge, computer science and statistics. Business knowledge is required to understand and solve a problem. Then comes understanding data-where it is stored, in what form and how to extract it. Third is how

What are the biggest misconceptions about statistics?

That all statisticians do is just look at huge spreadsheets full of numbersThis is just plain wrong. You're thinking about accountants, or investment bankers. Statisticians tend to care a lot more about aggregations of the data (the statistics),

In sports, why do world records get broken so frequently?

In the past 100 years, a number of things have changed in the sporting environment that led to a number of records being developed.The rise of professional sport. Before, sport was a leisure activity or something that working class people got into to get out of the working class.  They

What does the divorce rate of a country suggest about its society?

I think it says something about the sophistication of that nation's economy and/or the level of religious cohesion. Many nations with high divorce rates are industrialized or highly technological societies. A preponderance of non first world countries with higher divorce rates are communist or formerly

What is the best way to learn basic statistics besides taking a college course?

OpenIntro Statistics, 2nd edition - best introductory book (there are more cool things on this site!)Data Analysis and Statistical Inference - DataCamp excellent website to teach you R and statistics, and the exercises are interactive versions of ones from OpenIntroCoursera "Statistics: Making Sense of Data" - a course that

What percentage of marriage (in the USA) ends in divorce?

The percentage of marriages in the USA that end in divorce is a little bit of a tricky question, and one the media often skews.  You hear about nearly half the marriages failing in the USA, that's partially true.The truth is the statistics are actually much worse...if you're under

Why are divorce rates on the rise? Is there a correlation between affluence and divorce rates?

Before you ask why, ask if.Divorce rates are not on the rise in the USA, they are declining.Now as to your second question, the poor are more likely to get divorced than the middle and upper classes. Financial strain negatively affects a marriage. But that doesn't mean