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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

What are two problems with the one-time pad?

The two problems are; 1. The One time pad needs to be truly random. Pseudo random generators are quick however they can be predicted.

The second is practicability of being able to transmit the number of keys securely to the receiver.

For every bit of plain text, there is also 1bit of key.

What would be a coefficients of the expansion of the Pascal's Triangle?

its so simple....

1

1 1

1 2 1

1 3 3 1

1 4 6 4 1

1 5 10 10 5 1

.........................................

that is pascal's triangle coeffient law......just sum the two numbers and answer is yours

How much time does the average person spend on the toilet in a lifetime?

1/2 years or more. If you have bladder issues could be up to 4 years.

How are period and frequency related?

I'm pretty sure they're related because the period is the reciprocal of the frequency, and the frequency is the reciprocal of the period...but I'm not sure WHY yet :P hope I could hrlp

What does 90 degrees mean?

That one object is situated perpendicularly to another.

Telephone poles are 90 degrees to the earth if installed properly and don't lean.

When you are seated with both feet on the floor your knees are bent at approximately 90 degrees.

This answer applies to geometry rather than temperature.

Since the question is in cars and vehicles Im going to assume you are talking about torquing instructions where it says turn 90 degrees. Put your wrench on the bolt and imagine the handle is a clock arm, move it from 12 to 3 or 3 to 6. 90 degrees is 1/4 of a turn.

Given the digits 0-9... how many ways can you form an even number without replacement of numbers?

one digit: 5 ways

two digits: 5 * 9 ways

three digits: 5 * 9 * 8 ways

four digits: 5 * 9 * 8 * 7 ways

...

ten digits: 5 * 9! ways

So if you have to use ten digits, then the answer is 5 * 9! = 1814400.

If you can use anywhere from one to ten digits, then the answer is:

5 * (9! + 8! + 7! + 6! + 5! + 4! + 3! + 2! + 1) = 2045565

What does annual median wage mean?

Well, wage is how much one earns. Annual wage means earnings in one year.

Saying MEDIAN annual wage would mean you are asking about a group of individuals. A median is defined as a number at the center position of a set of numbers. In other words, whatever that MEDIAN annual wage is, 50% of people would earn more than that number in a year, 50% would earn less.

What does orantorio mean?

Oratorio is defined as a large-scale musical work for orchestra and voices, typically a narrative on a religious theme, performed without the use of costumes, scenery, or action. Well-known examples include Bach's Christmas Oratorio, Handel's Messiah, and Haydn's The Creation.

How do you find the average of 3 set of numbers in a year?

Add all the numbers together. Then divide by how many numbers there were originally. That is the average.

How do you compute expected value from random discreet variable?

Follow these steps:

  • Find all the values that the random variable (RV) can take, x.
  • For each x, find the probability that the RV takes than value, p(x).
  • Multiply them: x*p(x).
  • Sum these over all possible values of x.

The above sum is the expected value of the RV, X.

What number combinations equal 1000?

That depends what you want to do with those numbers - add them, multiply them, etc.