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The special character in your question didn't come through.
If it was a horizontal bar then it implies the sample mean; for example, for a sample of 'x' values (usually numbered 1, 2, 3, ..., n) x with a bar over it would mean the statistical average or mean of these numbers.
If the special character was a caret then it implies any of a variety of statistical estimators. For example, if you had assumed for some reason that the data had arisen from a population with a Poisson distribution with parameter 'lambda' then you might see a Greek letter lambda with a caret over it to represent a formula for calculating a statistical estimate of that parameter.
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What does mode mean in statistics?
The most commonly occurring number.
In statistics what does n equals mean?
In statistics, n is usually used to mean the number of observations or measurements which you have. So n = 7 means you have 7 observations or meadurements.
What does the E mean in statistics?
That depends on the context. Among other things, it can be the number e, which is about 2.718.
What are the importance of the mean in statistics?
the mean is important in statistics because you will find out your average and can compare that mean to other things..
What is the sign above the numbers?
If you mean the small number, it is a power.
