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Probability
The probability of a certain event is a number expressing the likelihood that a specific event will occur, expressed as the ratio of the number of actual occurrences to the number of possible occurrences. In mathematics, it is a measure of how often an event will happen and is the basis of statistics.
14,643 Questions
What does the standard error mean?
For a sample of data it is a measure of the spread of the observations about their mean value.
What is probability of a shot child?
If you mean the odds of a child in the US being shot- actually, very low- and has been getting lower for several years. Some groups with a political agenda claim there are more deaths from children being shot than there are ALL deaths of children- so check your sources carefully- and see how they define "Child". Assuming child means a human under 18 years old, there about 74.5 million of them in the US (some groups consider a 26 year old to be a child) The FBI Uniform Crime Report shows 454 murders of children, with about 20% being shot. That is about 1 in 818,000. However, the odds of a child being shot goes up if you live in a high crime city, belong to a gang, or commit criminal acts.
Experimental probability of rolling the sum of 2?
That means that you should roll a die many times, count how often you get the number "2", then divide this by the total number of rolls.
If the die is "fair" (no extra weight on one side), you would expect this experimental probability to be somewhere close to the theoretical probability of 1/6, at least, if you roll often enough.
What is the probability that the sum of two different single-digit prime numbers will NOT be prime?
1/2
number of cards in a deck =52
number of cards that are diamond =13
number of cards that are four =4
number of cards that are diamond and four =1
Probability that the card drawn is a diamond or a four=
13/52+4/52 -1/52
=16/52 or 4/13
How do you get your class size in probability and statistics?
One determinant is what the data will be used for, whether they need to be combined with other data for further analyses. If, for example, you want to study human mortality, you may want to use the same class sizes as for population statistics - which are usually 5-year age bands. That will enable you to calculate deaths rates. However, you may additionally wish to have a band for "less than 1 year" and "1 to 5 years" to allow you to study infant mortality in greater detail. At the other end, you may wish to group together "90 and above".
If there are no such constraints, you should divide up the range of values into 6-10 classes. Ideally, no class should have very few (<5%) observations. If there are, then combine adjoining classes - there is no requirement for the class size to be the same across the whole range.
One determinant is what the data will be used for, whether they need to be combined with other data for further analyses. If, for example, you want to study human mortality, you may want to use the same class sizes as for population statistics - which are usually 5-year age bands. That will enable you to calculate deaths rates. However, you may additionally wish to have a band for "less than 1 year" and "1 to 5 years" to allow you to study infant mortality in greater detail. At the other end, you may wish to group together "90 and above".
If there are no such constraints, you should divide up the range of values into 6-10 classes. Ideally, no class should have very few (<5%) observations. If there are, then combine adjoining classes - there is no requirement for the class size to be the same across the whole range.
One determinant is what the data will be used for, whether they need to be combined with other data for further analyses. If, for example, you want to study human mortality, you may want to use the same class sizes as for population statistics - which are usually 5-year age bands. That will enable you to calculate deaths rates. However, you may additionally wish to have a band for "less than 1 year" and "1 to 5 years" to allow you to study infant mortality in greater detail. At the other end, you may wish to group together "90 and above".
If there are no such constraints, you should divide up the range of values into 6-10 classes. Ideally, no class should have very few (<5%) observations. If there are, then combine adjoining classes - there is no requirement for the class size to be the same across the whole range.
One determinant is what the data will be used for, whether they need to be combined with other data for further analyses. If, for example, you want to study human mortality, you may want to use the same class sizes as for population statistics - which are usually 5-year age bands. That will enable you to calculate deaths rates. However, you may additionally wish to have a band for "less than 1 year" and "1 to 5 years" to allow you to study infant mortality in greater detail. At the other end, you may wish to group together "90 and above".
If there are no such constraints, you should divide up the range of values into 6-10 classes. Ideally, no class should have very few (<5%) observations. If there are, then combine adjoining classes - there is no requirement for the class size to be the same across the whole range.
What is the significance of probable cause?
"Probable Cause" is the foundatiion on which all arrests are based. It is a reasonable belief that a person has committed a crime. The test for whether probable cause exists for the purpose of an arrest is whether facts and circumstances within the officer's knowledge are sufficient to warrant a prudent person to believe a suspect has committed, is committing, or is about to commit a crime. See: http://www.lectlaw.com/def2/p089.htm
How many cards are in a yugiho deck?
I do 60 but I'm not 100% sure if it's right
40-60 cards is the limit.
Odds of rolling 6 ones with 10 dice?
The probability of rolling 6 ones with 10 dice is: 10C6 (1/6)6 (5/6)4 = 2.170635034...
x 10-3 ≈ 0.22%
What are the Odds of a woman having a baby on her birthday?
1 out of 365
These odds improve if she has sex and gets pregnant about 3 months after her birthday.
Three.
WHAT IS PROBABILITY OF A DECK OF CARDS DRAWING A TWO OF CLUBS AND JACK OF HEARTS?
The answer depends on
- how many cards are drawn,
- whether of not they are drawn at random, and
- whether or not the cards are replaced before the next card is drawn.
The answer depends on how x is related to the area and also on the measurement units.
The risk.
What is the probability of rolling a 2 on the first dice and an odd number on the second dice?
None, because you cannot have the first or second dice: it is the first die or second die.
The probability is 1/6 * 1/2 = 1/12
Which method is least appropriate for performing a simulation to estimate probability?
I believe that stimulation is always inappropriate. Simulation, maybe, but that was not what the question was about.
I believe it was Frank Moss Bennett. I have a reproduction of this painting you are talking about. When I look through several on-line galleries I have not seen this particular one under his name. His signature is on the bottom left side.
Chupacabra is the Spanish word for "goatsucker" because it is a creature that sucks the blood out of animals.
It means that it sucks ("chupa") the blood from goats ("cabras"). Other small animal deaths have been attributed to the chupacabras. Although there is no scientific support for its existence, the belief in the chupacabra is strong in some areas, due to its extensive folklore.
if you pick one marble at random, the odds are 17/(42+17+27) or 17/86 or about 20%
What is the probability that a specified seeding has no neighbors within 1 meter?
The answer will depend on the density of the seedlings and their distribution - in 2-D space..
