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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 do you determine the median in a set of data?

In this set of data, you need to put it in order from least to greatest. Now you eliminate one by one from each side at a time until you get to the last number. If you're left with 2 numbers, then you need to add them together then divide your sum by 2.

If three number cubes are rolled all at once how many ways can you get 2 of the same number?

I'm going to assume you mean standard dice, all three distinguishable, and exactly two of the same number.

First break the problem into smaller parts. First, determine the odds of getting the same number on the first two dice, and a different number on the third. Then just multiply this result by 3 and 216 to account for the first and last dice being the same, or the last two dice, then compute the total number of possibilities.

P(two dice being the same and last being different) = P(second die being the same as the first) * P(third die being different than the other two) = (1/6)(5/6) = 5/36

3*216*5/36 = 90 possibilities out of 216

What is 25 over 155 as a percentage?

Expressed as a percentage, 25/155 x 100 = 16.129032258064516 recurring (that is, 16.129032258064516129032258064516...) percent.

How do you figure out the answer to an example of a continuous random variable?

Techniques such as southern blot or polymerase chain reaction can be used to screen for randomly dispersed repeats.
DNA polymorphism is used in forensic science to make connections between the sample collected from the crime scene and the sample taken from the suspect.
Single nucleotide polymorphism, Variable number of random repeats are some examples of DNA polymorphism.

If two fair dice were rolled what is the probability of them rolling a sum of 11?

x

1

2

3

4

5

6

1

2

3

4

5

6

7

2

3

4

5

6

7

8

3

4

5

6

7

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9

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5

6

7

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9

10

5

6

7

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9

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11

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7

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9

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11

12

Therfore, there is a 2 in 36 (or 1 in 18) chance of rolling a total of 11.

When tossing 2 fair 6 sided number cubes what is the probability of tossing a sum of ten?

The first cube can land in any one of 6 different ways.

The second cube can land in any one of 6 different ways.

Together, they can land in any one of (6 x 6) = 36 different ways.

Sum of ten can come up in 3 different ways:

4 - 6

6 - 4

5 - 5

The probability of tossing a ten is (3/36) = 1/12 = 8-1/3 %

What comes next 3 7 10 11 12?

Any number can be the next number. It is easy to find a rule based on a polynomial of order 5 such that the first five numbers are as listed in the question and the next is the given number. There are also non-polynomial solutions. Short of reading the mind of the person who posed the question, there is no way of determining which of the infinitely many solutions is the "correct" one.

The simplest polynomial solution, using a polynomial of order 4, is

t(n) = (3*n^4 - 34*n^3 + 117*n^2 - 62*n + 48)/2 for n = 1, 2, 3, ...

Accordingly, n(6) = 18.

How many 5 digit numbers are their with distinct digits?

First digit can be any of nine (not "0"), second can also be any of nine, third any of eight, fourth any of seven and fifth any of six, that is 9 x 9 x 8 x 7 x 6 = 27216 such numbers

How many 3 digits positive numbers and which are they?

Numbers above 99 and under 1000 are 3-digits, all 900 of them.

How can a set of numbers have a range of zero?

A set with only one element. Its maximum = minimum = that element.

So the range = max - min = 0.

Can some one use 3 digit number to call a person?

Yes. Using extensions on an internal switchboard, for example.

Yes. Using extensions on an internal switchboard, for example.

Yes. Using extensions on an internal switchboard, for example.

Yes. Using extensions on an internal switchboard, for example.

What is the total number of spots on a six- sided regular die?

This is your lucky day ! I'm about to not only hand you the answer, but I've decided

to take my time and lay out the entire calculation for you as well, too:

1 + 2 + 3 + 4 + 5 + 6 = 21

Do coefficients only appear on variables?

Yes but only if the coefficient of the variable is 2 or more as for instance 2x means 2 times x but x on its own means 1 times x