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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 does perambulating mean?

A perambulator is either

  • a baby transport - a "pram" (which is just a shortening of perambulator). In the USA it is most often called a "stroller".
or
  • a surveyor's wheel - which is used to measure distances. A single wheel is attached to a handle and the device can be pushed or pulled along by a person walking. The circumference of the wheel is known so by tracking the total number of rotations (and fractions of rotation) while dragging or pushing the wheel between any two spots, the distance can be determined.
This fits well with the term Perambulate, which means "walk around". You "walk around" with a baby in a pram. In traditional English law, the term "perambulation" is used specifically to mean "determining the bounds of a legal area by walking around it", meaning physically walking around the region in question - a perambulator (surveyor's wheel) is very useful in that context.

What does hollaween mean?

Halloween is a shortening of "All Hallows Eve" the day that was believed that all the dark spirits came out.

What is the difference between natural infinite numbers and real infinite numbers?

A natural number is a counting number, such as 1, 2, 3. There are also known as whole numbers and integers. They can be infinitely large.

A real number is a number, possibly a natural number, but more possibly not, because there are an infinite number of real numbers that lie between any two natural numbers, such as 1, 1.1, 1.11, 1.111, 111112, etc, ad infinitum. Real numbers can also be infinitely large.

What is the probability of failing 75 times on a 2 percent chance of success?

If the probability of succeeding is 2%, then the probability of failing is 98%. The probability, then, of failing 75 times is 98%75, which is 22%.

What percent probability is associated with a z-value of 1.3?

None.

The probability of a continuous variable taking any particular value is always zero. The probability is greater than zero only when an interval (or range) is specified.

Has any astronomical measurement ever been accurate to within less than one standard deviation and can you give examples?

Yes. We know the distance from the Earth to the Moon very precisely, on the order of millimeters or less. The Apollo astronauts left "corner reflectors" on the Moon's surface, and when we fire a laser pulse at it, we can detect the precise moment when the reflection gets back to our sensor. Because we know the speed of light VERY precisely, we can calculate the distance based on the time from when the pulse is fired to when the reflection is returned.

We can calculate the distances to other space probes the same way - we send a radio signal, wait for the reply, and calculate the distance.

What is the probability that at least one tail appears when tossed 6 times?

you have 63 chances out of 64. i once witnessed a coin being tossed seven times and giving up 7 consecutive heads. we never tried it an eighth time, 7 heads and you had to go to the bar.

How do you find the distribution of data?

just go to the question like this and it will tell you

What are the odds of eight matching dice out of ten die in one roll?

The odds of one die being any number is 1 in 1. The odds of any of the next seven dice being the same as the first die is 1 in 6. The odds of the last two being different than the first die is 5 in 6.

The dice are unrelated to each other, and it does not matter in what order they are thrown, so the odds of eight matching dice out of ten dice is (1 in 1)1 (1 in 6)7 (5 in 6)2, or 25 in 10,077,696.

What is the greatest number you can make using all the digits from 0 through 9 exactly once?

Nine billion eight hundred seventy size million five hundred forty three thousand two hundred and ten.