binomial nomenclature
(noun)
the scientific system of naming each species of organism with a Latinized name in two parts
Examples of binomial nomenclature in the following topics:
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Classification of Microorganisms
- Microorganisms are scientifically recognized using a binomial nomenclature using two words that refer to the genus and the species.
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Nomenclature
- The ether functional group does not have a characteristic IUPAC nomenclature suffix, so it is necessary to designate it as a substituent.
- Examples of ether nomenclature are provided on the left.
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Naming Organic Compounds
- A rational nomenclature system should do at least two things.
- The IUPAC nomenclature system is a set of logical rules devised and used by organic chemists to circumvent problems caused by arbitrary nomenclature.
- An excellent presentation of organic nomenclature is provided on a Nomenclature Page created by Dave Woodcock.
- Click on the following link (http://people.ouc.bc.ca/woodcock/nomenclature/index.htm).
- Click on the following link (http://www.acdlabs.com/iupac/nomenclature/).
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Binomial Expansions and Pascal's Triangle
- The binomial theorem, which uses Pascal's triangles to determine coefficients, describes the algebraic expansion of powers of a binomial.
- The binomial theorem is an algebraic method of expanding a binomial expression.
- This formula is referred to as the Binomial Formula.
- Applying these numbers to the binomial expansion, we have:
- Use the Binomial Formula and Pascal's Triangle to expand a binomial raised to a power and find the coefficients of a binomial expansion
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Mean, Variance, and Standard Deviation of the Binomial Distribution
- In this section, we'll examine the mean, variance, and standard deviation of the binomial distribution.
- The easiest way to understand the mean, variance, and standard deviation of the binomial distribution is to use a real life example.
- In general, the mean of a binomial distribution with parameters $N$ (the number of trials) and $p$ (the probability of success for each trial) is:
- $s^2 = Np(1-p)$, where $s^2$ is the variance of the binomial distribution.
- Coin flip experiments are a great way to understand the properties of binomial distributions.
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Additional Properties of the Binomial Distribution
- In this section, we'll look at the median, mode, and covariance of the binomial distribution.
- There are also conditional binomials.
- The binomial distribution is a special case of the Poisson binomial distribution, which is a sum of n independent non-identical Bernoulli trials Bern(pi).
- This formula is for calculating the mode of a binomial distribution.
- This summarizes how to find the mode of a binomial distribution.
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Nomenclature of Carboxylic Acids
- In the IUPAC system of nomenclature the carboxyl carbon is designated #1, and other substituents are located and named accordingly.
- The characteristic IUPAC suffix for a carboxyl group is "oic acid", and care must be taken not to confuse this systematic nomenclature with the similar common system.
- These two nomenclatures are illustrated in the following table, along with their melting and boiling points.
- If you are uncertain about the IUPAC rules for nomenclature you should review them now.
- Some examples of both nomenclatures are provided below.
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Binomial Expansion and Factorial Notation
- The binomial theorem describes the algebraic expansion of powers of a binomial.
- Recall that the binomial theorem is an algebraic method of expanding a binomial that is raised to a certain power, such as $(4x+y)^7$.
- The coefficients that appear in the binomial expansion are called binomial coefficients.
- The coefficient of a term $x^{n−k}y^k$ in a binomial expansion can be calculated using the combination formula.
- Use factorial notation to find the coefficients of a binomial expansion
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Alcohol Nomenclature
- In the IUPAC system of nomenclature, functional groups are normally designated in one of two ways.
- If you are uncertain about the IUPAC rules for nomenclature you should review them now.
- Other examples of IUPAC nomenclature are shown below, together with the common names often used for some of the simpler compounds.
- When the hydroxyl functional group is present together with a function of higher nomenclature priority, it must be cited and located by the prefix hydroxy and an appropriate number.
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The normal approximation breaks down on small intervals
- Caution: The normal approximation may fail on small intervals The normal approximation to the binomial distribution tends to perform poorly when estimating the probability of a small range of counts, even when the conditions are met.
- However, we would find that the binomial solution and the normal approximation notably differ:
- We can identify the cause of this discrepancy using Figure 3.19, which shows the areas representing the binomial probability (outlined) and normal approximation (shaded).
- TIP: Improving the accuracy of the normal approximation to the binomial distribution
- The outlined area represents the exact binomial probability.