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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.

36,756 Questions

How many 4 digit numbers can you make by using the numbers zero threw nine?

Isn't that exactly the same thing as counting from 1000 to 9999 ?

It's 9999 numbers, minus the first 999 (they have less than 4 digits), which leaves 9,000 of them.

Pablo rolled a standard die times He got a 1 twelve times How does this result compare to the expected results?

The expected values were 2 of each value.

This differs significantly from what was expected.

You could show that the die is most likely not fair by using a chi squared test for goodness of fit.

How do you know if a set of numbers is an equation?

An equation contains mathematical symbols, such as + - / *. However, there are also other kinds of mathematical symbols (algebra, trigonometry and calculus) which may look different and some of which are words. examples of this may be:

cos(x) tan(x) sin(x)

to name a few.

There are however, more often than not, "standard" (+ - / *) operators in the more advanced mathematical equations to.

Is a new deck of cards already shuffled?

No. It is almost always A, K, Q, ..., 3, 2 of first Spades then Hearts, Diamonds and then Clubs. Last of all are jokers and scoring cards.

What is the units digit in 899?

899 means 8 x 100s + 9 x 10s and 9 x units. So the 9 on the right hand side is the units.

What do you do to work out the range of a set?

Take the largest number minus the smallest number; that is the range.

What do you want your residuals to be in statistics?

For the purpose of analyses, they should be independent, identically distributed random variables. But the ideal is that they are all 0.

What is the origin of unit measurements?

In ancient times, the body ruled when it came to measuring. The length of a foot, the width of a finger, and the distance of a step were all accepted measurements.

How many red queen's are in a deck of 52 cards?

In a standard deck of playing cards there are only two red queens. The queen of hearts is one. The Queen of diamonds is the other.

What if one mode is said 2 times and the other mode is said 3 times what is the mode in math?

Not sure what you are asking, but if there are two modes it is called bimodal and if there are three, it is trimodal.

If one number occurs 2x and one 3x, the one that occurs 3x is the mode.

How could you use the product of one third and 300 to find the produce of one sixth and 300?

The creator of the original question wants you to understand that since 1/3 and 1/6 differ by a factor of two, the products will differ by a factor of two, making the first product 100 and the second product 50. It's an unnecessary extra step, since 300/6 = 50

What is the shape of a distribution when the mean and the median are the same value?

That would provide some evidence that the distribution is symmetric about the mean (or median).

When is a binomial distribution cumulative?

It is cumulative when you add together the probabilities of all events resulting in the given number or fewer successes.

Is 91 is a median number?

Not by itself. In the sequence 80, 85, 91, 99 106... 91 is the median.