##### Asked by: Mihail Schulteis

asked in category: General Last Updated: 16th April, 2020# Is a negative z score good or bad?

**z**-

**score**means closer to the meanwhile higher means more far away. Positive means to the

**right**of the mean or greater while

**negative**means lower or smaller than the mean.

In this way, what does it mean if the z score is negative?

**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**. 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**.

Similarly, how do you use a negative z score table? **Negative Z score table**. **Use** the **negative Z score table** below to find **values** on the left of the mean as can be seen in the graph alongside. Corresponding **values** which are less than the mean are marked with a **negative score** in the **z**-**table** and respresent the area under the bell curve to the left of **z**.

Subsequently, one may also ask, can you have a negative z score?

1 Answer. Yes, a **z-score** with a **negative** value indicates it is below the mean. Z-scores **can** be **negative**, but areas or probabilities cannot be.

What is a significant z score?

The **Z score** is a test of statistical **significance** that helps you decide whether or not to reject the null hypothesis. **Z scores** are measures of standard deviation. For example, if a tool returns a **Z score** of +2.5 it is interpreted as "+2.5 standard deviations away from the mean".