The Handy Math Answer Book
PROBABILITY THEORY What are eventsand probability? Probabilityis a branch of mathematics that assigns a number measuring the “ch ...
symmetrical, the outcome would more likely be 0.5 (ratio of 1/2) for heads and 0.5 for tails. As we all know, it never comes out ...
that both xand ywill occur is given by the product of their separate probabilities; and the probability that either of the two e ...
nomena are not involved. In the case of modeling, stochastic models are based on random trials, while deterministic mod- els alw ...
What are independent eventsin probability? In probability theory, events are independent if the probability that they occur is e ...
tain event has caused an observed outcome by using estimates for all possible out- comes. Its simplest notation is as follows: W ...
But there are also rules of addition for mutually exclusive and independent events. For mutually exclusive events, or events tha ...
wrote a draft version of Van Rekeningh in Spelen van Geluck,a treatise about 15 pages long based on what he heard about the corr ...
The number of permutationsis the number of different ways specific entities within the cat group can be arranged, with the posit ...
heads and tails, respectively. If we toss the coin many, many times, the result should be close to 0.5. Of course, this means th ...
number, then certain other values are determined based on the characteristics of the group. The most important part of statistic ...
How does one sample a population? Sampling is the term used when one obtains a sample of a population; the number of members in ...
What is the difference between descriptiveand inferential statistics? Descriptive statistics is a way to describe the characteri ...
What other variablesare often used in statistics? When an experiment is conducted, variables manipulated by the experimenter are ...
The mode is considered a single value that occurs more often than any other in a set of data. It is not the frequency of the mos ...
square the numbers first. (Note: Taking the square root of the variance gives the standard deviation.) For example, take the num ...
Many of us are familiar with the normal distribution from standardized school test scores, as most result in a bell-shaped curve ...
What is a statistical test? A statistical test is a procedure used to decide if an assertion (often called a hypothe- sis) about ...
Bar graphsare similar to histograms, but with the columns separated by each other by small distances. They are commonly used for ...
This is a compact way of showing how the data values are distributed between the various number of people. It allows us to see, ...
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