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What is the definition of standard deviation and variance?
The set of X1, X2, ..., XN is called X. Given that mean(X), is the sum of all X divided by N, the variance of X is mean((Xi - mean(X))2). The standard deviation of X is the square root of the variance.
How do you calculate standard normal variate?
You use the z-transformation.For any variable X, with mean m and standard error s,Z = (X - m)/s is distributed as N(0, 1).You use the z-transformation.For any variable X, with mean m and standard error s,Z = (X - m)/s is distributed as N(0, 1).You use the z-transformation.For any variable X, with mean m and standard error s,Z = (X - m)/s is distributed as N(0, 1).You use the z-transformation.For any variable X, with mean m and standard error s,Z = (X - m)/s is distributed as N(0, 1).
What are the mean and the standard deviation of a proportion?
The mean of a proportion, p, is X/n; where X is the number of instances & n is the sample size; and its standard deviation is sqrt[p(1-p)]
What is the z score?
z = (x - u)/(standard dev)The z score expresses the difference of the experimental result x from the most probable result u as a number of standard deviations. The probability can then be calculated from the cumulative standard normal distribution. ie sigma(z)
Is it possible for a standard deviation to be negative?
no it is not possible because you have to take the square of error that is (x-X)2. the square of any number is always positive----------Improved answer:It is not possible to have a negative standard deviation because:SD (standard deviation) is equal to the square of V (variance).
How do you write 5.8 x 10 6 in standard format?
5.8 × 106 written in standard notation is 5,800,000
Write 5.37 106 in standard form?
5.37 106 in standard form is 5.37 x 106
What is 1.4 x 106 written in standard notation?
1.4 x 106 written in standard notation is 1,400,000
How do you write the number 8.916 106 in standard form?
8.916 106 (8.916 x 106) in standard form is 8,916,000
How do you write 2.75 x 106 in standard form?
actually 2.75 x 106^6
How do you write 6.07 times 106 in standard form?
6.07 x 106 in standard form is 6,070,000
What is the standard notation for 3.45 x 106?
3450000
What is the standard form of 2 x 106?
2.0 × 106 written in regular notation is 2,000,000
What is the standard form for 2 million?
2 x 106
What is 6199219 in standard scientific notation?
6.199219 x 106.
What is the standard form of 455000?
Expressed in standard form, 455000 is equal to 4.55 x 106.
What is 7.0 million in standard notation?
7 million in standard notation is 7.0 x 106
