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Statistics

Statistics deals with collecting, organizing, and interpreting numerical data. An important aspect of statistics is the analysis of population characteristics inferred from sampling.

36,755 Questions

What are the uses of measures of length mass and capacity in your day to day life?

I measure the distance I travel to work, the length of cable required to install an

antenna, the time required to haul my present mass up the tower, and how I will

satisfy my capacity for liquid refreshment when the job is done.

What colour will you be able to pick out of 1 red marble 2 blue marbles 2 green marbles and 3 yellow marble?

Red, blue, green or yellow.

Red, blue, green or yellow.

Red, blue, green or yellow.

Red, blue, green or yellow.

How many ways can you arrange the following numbers 2 3 4 5 7 9?

There are six distinct numbers, [2 3 4 5 7 9], so the number of permutations of those six numbers is 6 factorial, or 720.

What is the number premier in french digits?

The ordinal number premier in French corresponds to the English ordinal number "first".

When do you use Measures of Central Tendency?

Measures of central tendency, such as the mean, median, and mode, are used to summarize a set of data by identifying the central point within that data. They are particularly useful when you want to understand the overall trend or typical value in a dataset, making them essential in fields like statistics, psychology, economics, and research. These measures help to simplify complex data sets and facilitate comparisons between different groups or conditions. They are most effective when the data is normally distributed, but can also provide insights in skewed distributions, depending on the measure used.

How is the Correlation of the IQs of twins reared together?

The correlation of IQs in twins reared together is typically high, often around 0.85, indicating a strong genetic influence on intelligence. This high correlation suggests that both genetic factors and shared environmental influences play significant roles in shaping IQ. However, it also highlights that even within the same environment, individual differences can arise due to non-shared environmental factors. Overall, the study of twins provides valuable insights into the nature versus nurture debate regarding intelligence.

Two events are mutually exclusive if the occurrence of one depends on the occurrence of the other?

That depends on your definition of "depends." Mutually exclusive events are events that cannot occur at the same time. If you knew that Independent events most certainly can happen at the same time, you could easily deduce that mutually exclusive events are always dependent events. And while it's true dependent events affect the outcome of one another, that's not so easy to see when your dealing with events that don't occur in succession.

It can be said that if a mutually exclusive event occurs, the other events that are mutually exclusive in relation to it have not taken place, i.e. the complement of that event has not taken place. When you look at only two events that are mutually exclusive and jointly exhaustive (i.e. all the possible events) like flipping a coin once and getting either a head or a tails (where the probability of the coin landing on it's side is 0), you can say that one event, flipping a head, is dependent on the other event, flipping a tail, not happening. Therefore the events are mutually exclusive.

Now imagine two events which are still mutually exclusive but not jointly exhaustive, e.g. rolling a 2 or a 3 with a six sided die. Lets assume the die is not weighted so the probability of each is 1/6. A roll of two does not only depend on not rolling a three. To roll a 2 means not rolling a 1,3,4,5 or 6. To say that rolling a 2 and rolling a 3 are mutually exclusive if the occurrence one depends on the occurrence of the other is ambiguous at best, if not wrong. Rolling a 2 and rolling a 3 are mutually exclusive only because its impossible for both to happen at the same time with one roll, or you can say that P(2and3)=0.

It's fair to say that two events are mutually exclusive if the occurrence of one depends on the other not happening. But if you thought that two events are mutually exclusive because the occurrence of one relays on the occurrence of the other then you were wrong. That just describes dependent events in succession.

If one event's occurence depends upon the occurence of another, and the events cannot occur with a certain outcome otherwise, they are said to be dependent events. Mutually exclusive events are events that cannot occur together, as the occurence of one prohibits the occurence of the other. An example of a mutually exclusive event is this: two dice are rolled; what is the possibility of rolling both a nine and a double? One cannot roll both a nine and a double simultaneously; therefore, the events are mutually exclusive because one outcome excludes the other. An example of a dependent event is this: Susan is baking cookies. She has enough batter for two dozen chocolate chip cookies and one dozen oatmeal cookies. Therefore, the ratio of chocolate chip to oatmeal is 1.5:1. If Susan's little brother eats half of the chocolate chip cookies, the ratio changes to become 1:1. The possibility of the ratio being 1:1 is dependent upon Susan's brother eating half of the chocolate chip cookies. Thus, it is a dependent event. If one event's occurence depends upon the occurence of another, and the events cannot occur with a certain outcome otherwise, they are said to be dependent events. Mutually exclusive events are events that cannotoccur together, as the occurence of one prohibits the occurence of the other. An example of a mutually exclusive event is this: two dice are rolled; what is the possibility of rolling both a nine and a double? One cannot roll both a nine and a double simultaneously; therefore, the events are mutually exclusive because one outcome excludes the other. An example of a dependent event is this: Susan is baking cookies. She has enough batter for two dozen chocolate chip cookies and one dozen oatmeal cookies. Therefore, the ratio of chocolate chip to oatmeal is 1.5:1. If Susan's little brother eats half of the chocolate chip cookies, the ratio changes to become 1:1. The possibility of the ratio being 1:1 is dependent upon Susan's brother eating half of the chocolate chip cookies. Thus, it is a dependent event. If one event's occurence depends upon the occurence of another, and the events cannot occur with a certain outcome otherwise, they are said to be dependent events. Mutually exclusive events are events that cannotoccur together, as the occurence of one prohibits the occurence of the other. An example of a mutually exclusive event is this: two dice are rolled; what is the possibility of rolling both a nine and a double? One cannot roll both a nine and a double simultaneously; therefore, the events are mutually exclusive because one outcome excludes the other. An example of a dependent event is this: Susan is baking cookies. She has enough batter for two dozen chocolate chip cookies and one dozen oatmeal cookies. Therefore, the ratio of chocolate chip to oatmeal is 1.5:1. If Susan's little brother eats half of the chocolate chip cookies, the ratio changes to become 1:1. The possibility of the ratio being 1:1 is dependent upon Susan's brother eating half of the chocolate chip cookies. Thus, it is a dependent event.
Mutually exclusive events refers to the events that cannot occur at the same time.

What is 8.814 to the nearest tenth?

Tenth is the first decimal place, therefore, 8.814 to the nearest tenth is 8.8

What does queer mean?

"Queer" is a very stereotypical and slang term referring to someone (particularly a male) as being homosexual or gay.

Answer 2:

The term Queer is now also used for individuals whose sexual orientation does not fit into the norm and/or those who choose not to identify in the norm. In essence it is a political term that provides a unifying umbrella for people who are lesbian, gay, bisexual, transgendered, transsexual and/or intersex. Furthermore, Queer is often used by individuals/groups who reject traditional gender identities of simply male and female. This can even include people who do not identify as part of the LGBT community but who see themselves as oppressed by the heteronormativity of the larger culture. The term queer can and is empowering individuals to push against the limitations of traditional biased understanding of homo and hetero sexuality and gender identity (Male and Female). For these people, claiming a queer identity means throwing away the labels and expectations created by our society and embracing the notion that sexual identity and practice are different in more ways then one.
Queer is an old word to mean homosexual, or gay. It originally meant odd or strange. But over time, it became a hate slur against LGBT people. Then after the now defunct activist group, Queer Nation, reclaimed the term, it gained a more positive meaning. Also, LGBTs were grappling with what to call their community, and in the late 1990's, the term Queer was used regularly to refer to any LGBT person, and without the hatred that was once associated with the word.

Commentary:

Are they born Queer? Perhaps. Can a queer become normal? I don't know, possible, but it might be hard. In native American culture they are considered a special breed of people. But as we speak, they are being ridiculed, abused, beaten, etc. Why? because they have openly show affection in public places without shame. They pose a danger to themselves by being openly gay or queer.

Why do biologists use sampling?

Biologists use sampling in their work because of two main reasons. Studying all the organisms in a population will be time wasting and the exercise will be expensive.