## why is n

Ask Dr. Math FAQ: N to Zero Power - Why is any number raised to the zero power equal to one? Let's first look at an example. Let's look at the list of numbers 3^1, 3^2, 3^3, 3^4, . Finding the actual

Why is n/0 not equal to 0? - Division by zero is simply not defined (it doesn't yield infinity as an answer, that is a misconception). In your example, if n is zero, then the person who took the apples and left, cannot exist. Why does zero factorial (0!) equal one (1)?

Why divide by \(n – 1\) instead of by n - When we divide by (n −1) when calculating the sample variance, then it turns out that the average of the sample variances for all possible samples is equal the population variance. So the sample variance is what we call an unbiased estimate of the population variance.

Why is nitrogen important? - Nitrogen (N) is one of the building blocks of life: it is essential for all plants and animals to survive. Nitrogen (N2) makes up almost 80% of our atmosphere, but it

Review and intuition why we divide by n-1 for the unbiased sample - ab is, by definition, the solution of the equation bx=a. Thus nn is the solution to the equation nx=n. Assuming n≠0, this equation has the unique solution 1.

Why is \$n\$ divided by \$n\$ equal to \$1\$? - If a set has no limit points, then it contains all its limit points. Just like the empty set is a subset of any set.

calculus - Why is \$\mathbb N\$ a closed set? - Why Sample Variance is Divided by n-1. Explaining high school statistics that your teachers didn't teach. Go to the profile of Eden Au · Eden Au

Why Sample Variance is Divided by n-1 – Towards Data Science - The "1/n" version is the maximum likelihood estimate of the population variance, however, it is also mathematically biased. The "1/(n-1)" convention provides an

Why divide by n-1 when estimating standard deviation? - A: N-Score and probability are the same. The n scores are the z scores from a standard normal distribution ie. mean 0 and sd 1 (hence n score,

What is N-Score and why is it used rather than a “probability” on the - We subtract our sample mean, square it, and then divide by the number of data points that we have

## why is a negative times a negative a positive yahoo answers

Why does a negative times a negative equal a positive? - Now, if you are curious as to why a positive times a negative is a negative, we can use similar techniques. Once again, let a and b be positive

Why is negative times negative positive - Math: Negative Times Negative Equals Positive Proof that a negative number times a negative number is a positive number - using a free math problem solver that answers your questions with step-by-step explanations. Add to My Yahoo!

Why a negative times a negative makes sense (video) - We can represent "removes" by a negative number and figure out the answer by multiplying. This is an illustration of a negative times a negative resulting in a positive. If one thinks of multiplication as grouping, then we have made a positive group by taking away a negative number twelve times.

Why is a negative number times a negative number a positive - We can represent "removes" by a negative number and figure out the answer by multiplying. This is an illustration of a negative times a negative resulting in a positive. If one thinks of multiplication as grouping, then we have made a positive group by taking away a negative number twelve times.

Ask Dr. Math FAQ: Negative Times a Negative - But when I tell him a minus times a minus equals a plus he says WHY? The answer has to do with the fundamental properties of operations on the reason why the negative numbers were introduced: so that each positive

Question Corner -- Why is the Product of Negative Numbers Positive? - Yahoo! Answers is a community-driven question-and-answer (Q&A) website or a knowledge To ask a question, one has to have a Yahoo! account with a positive score balance of five points or more. The points .. Korea IT Times. Retrieved

Why does a negative times a negative equal a positive - So if you have negative times a positive the negative doesn't have a pair therefore the answer is negative. The negatives always come in pairs. A positive times

Why Does a Negative Times a Negative Equal a Positive - While that will get you through most mathematics in school, there's a lot more to math than that

Yahoo! Answers - Let's think about a multiplication equation as a person walking right or left on a number line.

Multiplying Positive and Negative Numbers - This tutorial uses basic math and logic to demonstrate that a negative times a negative equals

## why is s

pronunciation - Why is the "s" in "island" not pronounced? - (The derivation is not from Latin insula but from various Germanic forms, which also had no 's'.) According to Wikipedia, island comes from Middle English iland. However, the spelling was modified in the 15th century due to an incorrect association with the French loanword isle.

Why is it "'s" after Let and before a verb, example "Let's go" or - We often learn the structure “Let's do something”, but why it there an apostrophe- s after let and before the verb? Why does we need 's in this structure? Does 's

Why is 'S' a higher rank than 'A' in video games, etc.? - S-rank may be a curveball in the A-D ranking progression. But when it comes down to it, its an alternate grade to A+ or A++. Treat it as an

Why Is The Dollar Sign A Letter S? - Observation Deck - The letter S appears nowhere in the word “dollar”, yet an S with a line through it (\$) is unmistakably the dollar sign. But why an S? Why isn't the

In an expression of apparent power (S= VI*), why is conjugate of - Complex conjugate of current phasor is used because for S you need phase difference between the voltage phase and current phase. Thus the S^ angle (phi) is

“Why is the the letter 'f” used instead of “s” in old-fashioned spellings?” - F? S? You'd be forgiven for getting them confused when looking at old manuscripts. So, why did the letter 's' sometimes look like the letter 'f'?

Why the “s” in HTTPs is important - Who among us doesn't connect to public WiFi in the airport or at a coffee shop. One of the conveniences of the modern world is being able to

Why Brits Spell Words Like 'Realize' With an 'S' | Anglophenia - Yes, generations of readers and writers have grown up being used to reading realise with an s. But as either version is accepted there, and in America only one

American and British English spelling differences - Many of the differences between American and British English date back to a time when William Shakespeare's first folios, for example, used spellings like center and color as much as centre and colour. Webster did attempt to introduce

## why is o

Why is type O the most common blood type? - The gene for type O is 'recessive', because if you have one gene for O and one for A, then you still end up with A antigens on your cell membranes, and the same goes for O and B. In order to be group O, you need both parent cells to be O. But group O is still more common simply because it is the ancestral form.

Human Blood Facts: Why Blood Type O Positive Is More Common - Given the numbers in the example given in other answers on this page, you can see that 49% of the people you meet will have type O blood,

Why is O the most common blood type in humans even though it is a - Just because an allele is recessive doesn't mean it is necessarily the least common, they aren't always distributed in a theoretically perfect ratio

Why is O the most common blood group? : askscience - It's because type O blood lacks any antigens, and therefore a person with type O blood has A, B, and Rh antibodies, assuming they are type

Why is 0! = 1? - Not all blood is alike. Learn about blood typing and the rarest and most common types of blood and how they can impact your blood donation.

Why can a type O person donate blood to all other blood types but - Within the ABO blood group system, an individual can be typed as A, B, AB or O depending on the nature of the protein (called antigen) present

Blood Types Explained - That leads to the eight common blood types: positive, and negative versions of A, B, O, AB. What you may not realize is that there are rare blood types.

Ask the Expert- Why is Type O Known as the Universal Donor? - Your O negative donation could help save lives in an emergency. Everyone can receive O negative blood, so it's sometimes called the 'universal blood type'.

Why Type O Is the Most Common Blood Type - However, lingering questions remain, such as: why are some blood types more common than

O negative blood type - NHS Blood Donation - TED-Ed Riddles S3 • E1 Can you solve the famously difficult green-eyed logic puzzle? - Alex

## why is the sky blue

Why Is the Sky Blue? - Blue light is scattered in all directions by the tiny molecules of air in Earth's atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.

Why is the sky Blue? - A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun

Why is the sky blue? - To understand why the sky is blue, we need to consider the nature of sunlight and how it interacts with the gas molecules that make up our atmosphere. Sunlight

Why Is the Sky Blue? - Gases and particles in Earth's atmosphere scatter sunlight in all directions. Blue light is scattered more than other colors because it travels as shorter, smaller

Why is the sky blue?| Explore - After days of rain, a patch of blue sky is a sight for sore eyes. So, when the Sun is high in the sky, blue light is scattered in all directions as sunlight passes

Why Is the Sky Blue? - We see a blue sky, because of the way the atmosphere interacts with sunlight. White light, including sunlight, is made up of many different

Why is the Sky Blue? - Learn about the atmosphere and how light scattering makes the sky look blue. MIT used parts On a clear sunny day, the sky above us is a brilliant blue. In the

Why is the sky blue? - The sky is blue because of the way the Earth's atmosphere scatters light from the sun. Find out what makes the sky blue in this article.

Why Is The Sky Blue? - Some people think the sky is blue because of sunlight reflected off the ocean and back into the sky. But that's not the real reason.

Curious Kids: Why is the sky blue and where does it start? - As sunlight passes through the atmosphere, particles in the air scatter blue light more