What is the z-score of 2?

What is the z-score of 2?

Z-table

What Z value is 2 standard deviations below the mean?

A negative z-score reveals the raw score is below the mean average. For example, if a z-score is equal to -2, it is 2 standard deviations below the mean. Another way to interpret z-scores is by creating a standard normal distribution (also known as the z-score distribution or probability distribution).

What if z-score is greater than 3?

A z-score close to 0 says the data point is close to average. A data point can be considered unusual if its z-score is above 3 or below −3 .

What percentile is a 2 z-score?

For instance, we know that a Z-score of +2 represents 2 standard deviations above the mean. This same location, when converted to a percentile would be the 98th percentile.

What if Z value is greater than 3?

A positive z-score says the data point is above average. A negative z-score says the data point is below average. A z-score close to 0 says the data point is close to average. A data point can be considered unusual if its z-score is above 3 or below −3 .

What is the z-score range?

Z-scores range from -3 standard deviations (which would fall to the far left of the normal distribution curve) up to +3 standard deviations (which would fall to the far right of the normal distribution curve). In order to use a z-score, you need to know the mean μ and also the population standard deviation σ.

What is the z-score of 3?

A Z score of 3 refers to 3 standard deviations. That would mean that more than 99% of the population was covered by the z score. There’s not a lot left, but there is some. Use Excel to find the actual value if your table doesn’t go that high.

Can z-score be more than 5?

You can certainly get a z-score to exceed 5 in absolute size, or indeed any other finite value.