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- What is positive and negative z-score?
- How do you find the negative z-score on a positive table?
- Is there a negative z-score table?
- How do you find the area between a positive and negative z-score?
What is positive and negative z-score?
If a z-score is equal to 0, it is on the mean. A positive z-score indicates the raw score is higher than the mean average. For example, if a z-score is equal to +1, it is 1 standard deviation above the mean. A negative z-score reveals the raw score is below the mean average.
How do you find the negative z-score on a positive table?
If you have a negative z-score simply use the same table but disregard the negative sign, then subtract the area from the table from 1.
Is there a negative z-score table?
There are two z-score tables which are: Positive Z Score Table: It means that the observed value is above the mean of total values. Negative Z Score Table: It means that the observed value is below the mean of total values.
How do you find the area between a positive and negative z-score?
Area Between Two Negative z Scores
Use the standard normal distribution table to look up the areas that go with the two corresponding positive z scores. Next, subtract the smaller area from the larger area. For example, finding the area between z1 = -2.13 and z2 = -. 45, is the same as finding the area between z1* = .
