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How do you describe a frequency Table?
It is a table that summarises data for a number of observations on a variable. For each value (or range of values) that the variable takes the table shows the number of instances in which the variable took that value.
What is discrete probability distribution?
It is a function that gives the probabilities associated with the discrete number of values that a random variable can take.
What is the main difference qualitative and quantitative observations?
The first will have numerical values associated wit the observations the second will not.
What is a example of discrete data?
Discrete data are observations on a variable that which take values from a discrete set.
What does define mean in math terms?
The mean is sometimes also known as the arithmetic average. For a finite number of observations, it is he sum of their values divided by the total number. It can also be described as the expected value of a variable. If a discrete numerical variable X can take the values x, then the mean is the sum [x*pr(X = x)] where the summation is over all possible values of x. For a continuous variable, replace the summation by integration.
What are values of the independent variable?
The answer depends on whether or not you (or someone else) have any control over it. If someone has control then they can choose the values. If not, you get what the observations give you.
When specific values if one variable tend to occur in common with specific values of another?
what do we call a measure that is relatively unaffected by extreme observations
Does line plots display individual data?
They can do, but there are some circumstances where they may not be particularly useful. If, for example, the observations are not in order of the values of the independent variable, then a line plot will be difficult to read. If there are several different values of the dependent variable for a single value of the independent variable, the graph may be difficult to interpret. If there are two or more observations where the values of both variables are the same, the graph may not indicate that the point is in fact a multiple observation.
What is The actual numerical value assigned to nominal level variable?
The whole point of a nominal variable is that is has no numerical value associated with it. With a binary measure you can allocated the values 1 and 0 or +1 and -1 for observations where the attribute is present or absent. If there are more than 2 values that the nominal variable can take then you can allocate any numbers that you want but in all cases the numbers do not have a value: they are simply symbols which can help for sorting and for binary comparisons.
What defines a variable?
A variable is a named storage location that can hold any data value. A variable has two associated values ; r value and l value.
What is average over time?
Average over time refers to the calculation of the mean or average value of a given variable over a specific period. This involves adding up all the values of the variable during that period and dividing by the number of observations. It helps in understanding the trend or behavior of the variable over time.
How do you get the moyenne?
You add together the values observed and divide the sum by the number of observations.
