set the all possible data worths for a given subject under considerationexample: if we room studying the weight of adult women, the population is the collection of weights of all the women in the world.

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In statistics, a categorical variable is a variable that can take on one of a limited, and usually fixed, number of possible values, for this reason assigning each individual to a specific group or "category."

Quantitative Variable. Variables that have are measured on a numeric or quantitative scale. Ordinal, interval and also ratio scales space quantitative. A country"s population, a person"s shoes size, or a car"s speed are all quantitative variables.

A type of variable, additionally called a categorical or in the name variable, which has a finite variety of possible values that perform not have actually an inherent order. For example, hair color would it is in a discrete variable, since it deserve to only have actually a minimal number of values, such as red, brown, and black, the does not take place in any certain order

If a variable can take on any kind of value in between its minimum value and its maximum value, the is referred to as a constant variable; otherwise, it is referred to as a discrete variable. Example: mean the fire room mandates that all fire fighters should weigh between 150 and 250 pounds. The load of a fire fighter would be an example of a consistent variable; since a fire fighter"s weight can take on any kind of value between 150 and also 250 pounds.

A value that "lies outside" (is lot smaller or larger than) many of the various other values in a set of data.how to find:For the data 2, 5, 6, 9, 12, we have the adhering to five-number summary:minimum = 2first quartile = 3.5median = 6third quartile = 10.5maximum = 12IQR = 10.5 - 3.5 = 7, for this reason 1.5·IQR = 10.5.To identify if there are outliers us must take into consideration the number that room 1.5·IQR or 10.5 past the quartiles.first quartile - 1.5·IQR = 3.5 - 10.5 = -7third quartile + 1.5·IQR = 10.5 + 10.5 = 21

The traditional deviation is a number value used to indicate exactly how widely individuals in a team varyhow come find: square root of the variance

In probability theory and statistics, variance measures how much a set of number is spread out. A variance of zero suggests that all the values space identical.how to find: To calculate the variance follow these steps: job-related out the typical (the basic average that the numbers) Then for each number: subtract the Mean and also square the result (the squared difference). Then work-related out the average of those squared differences.

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A formula because that the number of possible combinations of r objects from a collection of n objects. This is created in any type of of the ways displayed below. All forms are read aloud "n select r.

A permutation is an setup of every or part of a set of objects, v regard to the stimulate of the arrangement. Because that example, intend we have actually a set of 3 letters: A, B, and C. We might ask how numerous ways we have the right to arrange 2 letters from that set.nPr