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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 different combinations of seven-digit number are possible that begin with 555 explain the method you used?

There are 10,000 of them.

I used the method of logic, combined with reasoning.

You're only changing the last 4 digits.
With 4 digits, you can count from 0000 to 9999 . . . 10,000 numbers.

What shows how far away a measurement is from the mean or average of the set?

a line of best fit, on a graph you draw the line where it is closest to most points and measure how far it is away from the line.

http://www.bbc.co.uk/schools/gcsebitesize/maths/images/graph_53.gif

Is course evaluation scale nominal or ordinal or ratio or interval?

It is Ordinal:Order the data from smallest to largest or "worst" to "best".Each data value can be compared with another data value.

How do you find the meadian of an even amount of numbers?

Assuming that you are referring to the median, the answer is to arrange the number is size-order and take the arithmetic mean (average) of the middle two numbers.

How many codes are there that have 3 letters and 2 numbers?

There are 26 different letters.

There are 10 different numbers.

If a letter or number is allowed to repeat in the code:

Number of ways to make 3 letters = 26 x 26 x 26 = 17,576

Number of ways to make 2 numbers = 10 x 10 = 100

Number of ways to make 3 letters and 2 numbers = 17,576 x 100 = 1,757,600

Each group of 3 letters and 2 numbers can be arranged in (5 x 4 x 3 x 2) = 120 different ways.

So the number of different codes = 1,757,600 x 120 = 210,912,000 .

If a letter or number is not allowed to repeat in the code:

Number of ways to make 3 letters = 26 x 25 x 24 = 15,600

Number of ways to make 2 numbers = 10 x 9 = 90

Number of ways to make 3 letters and 2 numbers = 15,600 x 90 = 1,404,000

Each group of 3 letters and 2 numbers can be arranged in (5 x 4 x 3 x 2) = 120 different ways.

So the number of different codes = 1,404,000 x 120 = 168,480,000 .

What do misleading graphs contain?

They usually contain a "break" in the graph, which would be on the left side of the graph.

What are some uses of statistics in your life?

statistics is used in all aspect of life. so which ever one human finds himself it is alwayz beter to give it a name

examples are agricultural statistics, insurance statistics, actuarial statistics,educational statistics,financial statistics etc

What the probability of rolling a sum of nine with a single toss of two fair six sided dice?

There are 36 different ways to roll 2 6-sided dice.

The ones that make 9 are:

3+6 , 4+5 , 5+4 , 6+3

4 out of 36 = 4/36 = 0,111111111 = 11,1 %

When two balanced dice are rolled there are 36 possible outcomes what is the probability that the sum of the numbers on the dice is greater than 10?

Out of the 36 possible and equally-probable outcomes (1st die's number and 2nd die's number), only 3 combinations give you a sum greater than 10:

* 1st die gives a 5 and 2nd die gives a 6

* 1st die gives a 6 and 2nd die gives a 5

* 1st die gives a 6 and 2nd die gives a 6

Therefore the probability that the sum is greater than 10 equals 3/36, or 1/12.

How do you calculate 45 to the power 0.3?

Approximated 3.133.

45^0.3 is the same as finding the 10th root of 45 to the 3rd power.

If you just need the approximate numerical value of an expression like this you can use google. Simply enter: 45^0.3 at the prompt and it will return 3.13302423373

More generally if you lack access to google, or to a calculator that can deal with fractional exponents, then you can make this calculation using logarithms.

log1045 = 1.65...

0.3*log1045 = 0.496...

10^0.496... = 3.1330...

And there are other, numerical methods. Ask again if you're interested.

What is the front-end estimation for 2356?

2,000. A front-end estimation just means to round it by the greatest value, in this case the thousands.

What are the advantages and drawbacks of using gold standard?

Unfortunately there are disadvantages to the gold standard. One of the main disadvantages of implementation is that a gold standard would artificially inflate gold's value, increasing the cost of items and industrial process in which it is used. Another disadvantage is under the gold standard, gold mined at a different rate than the economy grows can produce both inflation, when deposits are discovered and extracted and deflation when they are mined to exhaustion

When a coin is tossed why it appears head or tail?

Those are the names given to the two faces of a coin. From early days, coins had an image of important persons - kings, queens, emperors, on one face and that face was called heads. The reason for the other side being called "tails" is uncertain.

These are the only two outcomes of a coin being tossed. Although there is a non-zero probability of the coin falling and remaining on its edge, it is small enough to be ignored in practice.

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