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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
Can data allow you to change the way data appears?
You can have what is known as Conditional Formatting, which can change the format, depending on the value.
When dealing three cards from 52 cards what is the probablity that they will all be jacks?
4/52 x 3/51 x 2/50
This is because it is difficult for some people to have this organization. Organization is sometimes linked to manipulation.
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Marble comes in every color imaginable. It can be a chalk-white to a onyx-black. It can be calico colored as well from every color including different colored cyrstals to add to the mix. Marble for exterior use is normally white.
Median of 5 is 5
Average of 5 is 5
Sum of 5 is 5
It's quite pointless to calculate properties of collection of numbers if it consists of only one number.
What are the different sources of error in surveying?
Personal errors
natural errors
instrumental errors
How is that the random sample gives a fairly accurate representation of public opinion?
The larger the sample, the greater the accuracy, but in every case, the sample must be truly random.
What are the odds of rolling a double two with 2 dice?
Each cube can land in 6 different ways.
The chance of a '2' on the first cube = 1/6 .
The chance of a '2' on the second cube = 1/6 .
The chance of both of them on the same roll = (1/6) x (1/6) = 1/36 = 2 7/9 percent
Is the median affected by the mean?
The median is the value which seperates the upper and lower half of a set of numbers.
The mean is the average value between two or more numbers.
In calculating a set of numbers, specifically a set of averages, the median may indeed be effected by the mean.
Notice that 63 is a multiple of 9 and 81 (which is close to 82) is a multiple of 9. This gives a decent approximation to 63/82. More specifically, 63/82 is approximately 7/9, or 0.7778.
If you flip a coin 10 times what is the posability that the coin will land on heads?
The probability that the coin will land on heads each time is 1/2. (1/2) to the tenth power is 1/1024. This is the probability that the coin will not land on heads. Subtract it from one to get the probability that it will : 1-(1/1024)
There is a 1023/1024 or about 99.90234% chance that the coin will land on heads at least once.
(There is a 1/1024 chance that the coin will land on heads all four times.)
Which group of sets does the number 1 belong to?
There are infinite number of sets:
Integers, positive integers, rationals, reals, {1,2,3}, {1, 2.35, sqrt(-7), -one quintillion}
Numbers that are neither prime nor composite.
Multiplicative identities in mathematical groups.
Numbers whose name, in English, begins with the letter O.
