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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 decimeters are there in 6113 meters?

There are 10 decimetres in one metre. Therefore, 6113 metres is equal to 6113 x 10 = 61130 decimetres.

What is the probability of rolling a 1 with six dice?

The probability of rolling at least one '1' with six dice is 66.5% [1-(5/6)^6]*100%

What is a chance event?

It is a probability from 1 that it will happen to 0 that it will not happen

What characteristics do data sets share when they have the same range?

The minimum and maximum are the same.

The mean, median, and mode can be different.

Who uses pascals triangle nowadays?

Well Pascal doesn't use it much. Math people and maybe a few scientists.

How many vehicles can a state license if it uses 3 letters and 3 digits on each tag?

If the letter and digits can be repeated and numbers like 0xx, 00x, and 000 are allowed then we see that the First Letter can be picked in 26 ways Second Letter can be picked in 26 ways Third Letter can be picked in 26 ways First Digit can be picked in 10 ways Second Digit can be picked in 10 ways Third Digit can be picked in 10 ways So total number of unique licence plates subject to above suppositions is 26 x 26 x 26 x 10 x 10 x 10 = 17576000

What is the probability of a independent event is going to happen?

If it's an independent event then it's probability does not depend on preceding events. For example, if I flip a coin twice the probability that the coin will show 'heads' the second time is independent of what happened the first time; it's just 1/2.

What graph what I used to show the height of four planets?

You what use a pie graph because of planets is round, four planets is like 4,000 feets because a planet is like 1,000 feets heigh

How many times does a digital cycle repeat in MHz?

MHz (megahertz) means millions of cycles per second. For example, if something has a frequency of 100 MHz, something will repeat at a rate of 100 million cycles per second.

Will something happen in September?

Some things that typically happen in September every year:

  1. September is generally viewed as the end of summer.
  2. Parents are buying school clothes and supplies, or fretting about the money they already spent.
  3. Most US students are back in school.
  4. Students in new schools are still finding their way between classrooms.
  5. Parents feel relieved their kids are back at school.
  6. Teachers feel excited to teach.
  7. Kids are already practicing and playing for school sports' teams.
  8. Temperatures are beginning to change, in both Hemisphere areas.
  9. Winds start to pick up with changing temps.

What is the probability of finding a T value greater than t.845 given that sample size is 95?

There is not enough information in the question to determine if the t-distribution is the appropriate model to use. If it is, then, with, a sample size of 95 the z-score for the Gaussian distribution is a suitable approximation. The probability is 0.199, approx.

What is expected value?

If this is regarding probability, there are two cases:

E[Y] = (Summation) yp(y) in the discrete case. For example a fair dice has 1/6 probabilty for each event (of getting one value). so the sum is from 1 to 6 of yp(y). = 1(1/6) + 2(1/6) + 3(1/6) + 4(1/6) + 5(1/6) + 6(1/6) = (1/6) ( 1+2+3+4+5+6) = 21/6 = 3.5. So E[Y] for a fiar dice is 3.5

E[Y]= (intergral from -infinity to infinity) yf(y)dy , where f(y) is the density function for the continuous case. The integral must exits to be evaluated.

The difference between the two is basically the domain. If you dealing with integers you can use the discrete case, if you dealing with real numbers you have to use calculus.

Did this help?

Z scores?

If a random variable X has a normal distribution with mean m and standard error s, then the z-score corresponding to the value X = x is (x - m)/s.

If a woman walking by gives you a smile does it mean she finds you attractive?

Answer Could be that she finds you attractive, why not follow her and see if she minds joining you for a coffee. What have you to loose.

How can you figure out somethings average speed?

Measure the total distance travelled (d) over a period of time (t). Then, the average speed is d/t in the appropriate units.

How many numbers can be made with 4 digits ranging 0 - 9?

10^4 or 10,000, assuming that 0000 is a valid number. 0000, 0001, 0002, ..., 9997, 9998, 9999.

What was done to stop the Plague sreading?

they told them to jump of a cliff or something hight that would kill them or if they survieved they shagged someone then went sick in their miuths then stabbed each other:) happy days! LOL:') Y.O.L.O

What are the examples of statistics?

over the winter, Jamestown's population decreased from 150 people to 75 people.