answersLogoWhite

0


Best Answer

A negative Z-Score corresponds to a negative standard deviation, i.e. an observation that is less than the mean, when the standard deviation is normalized so that the standard deviation is zero when the mean is zero.

User Avatar

Wiki User

โˆ™ 2011-11-06 00:42:27
This answer is:
User Avatar
Study guides

Algebra

20 cards

A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

โžก๏ธ
See all cards
3.74
โ˜†โ˜…โ˜†โ˜…โ˜†โ˜…โ˜†โ˜…โ˜†โ˜…
1195 Reviews

Add your answer:

Earn +20 pts
Q: How do you know if a z score is positive or negative?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Does a negative z score yield a negative probability value?

no, z score can be negative but a probability is a always positive between 0 and 1.


How do you interpret a negative z- score?

A negative z-score indicates that the observed value (or statistic) was below the mean. In non-directional tests, a negative z-score is just as likely as a positive one.


How do you find probabilty of negative z score?

Let z be positive so that -z is the negative z score for which you want the probability. Pr(Z < -z) = Pr(Z > z) = 1 - Pr(Z < z).


What is measured by the sign of a z-score?

The sign of the z score is negative if the observation was below the mean and positive if it was greater.


How do you change a negative z score to a decimal?

In the same way that you would convert a positive z-score. Only leave a negative sign in front of it.


Can a negative z score be greater than a positive z score?

Assume the z-score is relative to zero score. In simple terms, assume that we have 0 < z < z0, where z0 is the arbitrary value. Then, a negative z-score can be greater than a positive z-score (yes). How? Determine the probability of P(-2 < z < 0) and P(0 < z < 1). Then, by checking the z-value table, you should get: P(-2 < z < 0) ≈ 0.47725 P(0 < z < 1) ≈ 0.341345


Does anyone know any positive and negative character traits that start with the letter z and that start with the letter k too?

Positive Z: zealous, zestful. Negative Z: ??? Positive K: Kind, keen Negative K: kooky(?)


What is the meaning of a negative z score?

A negative z score is a value that is less than the mean value.


Does a positive raw score always result in a positive z score?

No.


Why does a negative z score produce positive results?

well why can't pigs fly? same thing!


Is a negative z score always an indicator that the raw score is below the mean?

Yes.z = (raw score - mean)/standard error.Since the standard error is positive, z < 0 => (raw score - mean) < 0 => raw score < mean.


What does a negative z-score mean?

z-score of a value=(that value minus the mean)/(standard deviation). So if a value has a negative z-score, then it is below the mean.

People also asked