A Z Score, also called as the Standard Score, is a measurement of how many standard deviations below or above the population mean a raw score is. Meaning in simple terms, it is Z Score that gives you an idea of a value’s relationship to the mean and how far from the mean a data point is.

Standard Normal Cumulative Probability Table Cumulative probabilities for NEGATIVE z-values are shown in the following table:

This is the "bell-shaped" curve of the Standard Normal Distribution. It is a Normal Distribution with mean 0 and standard deviation 1. It shows you the percent of population:

Standard deviation (𝜎) Standard deviation must be a positive non-zero value. A z-table, also called standard normal table, is a table used to find the percentage of values below a given z-score in a standard normal distribution.

In statistics, a standard normal table, also called the unit normal table or Z table, [1] is a mathematical table for the values of Φ, the cumulative distribution function of the normal distribution.

STATISTICAL TABLES 1 TABLE A.1 Cumulative Standardized Normal Distribution A(z) is the integral of the standardized normal distribution from −∞to z (in other words, the area under the curve to the left of z). It gives the probability of a normal random variable not being more than z standard deviations above its mean.

STANDARD NORMAL DISTRIBUTION: Table Values Represent AREA to the LEFT of the Z score. Z .00 .01 .02 .03 .04 .05 .06 .07 .08 .09 -3.9 .00005 .00005 .00004 .00004 ...

Confidence Interval Critical Values, zα/2 Level of Confidence Critical Value, z α/2 0.90 or 90% 1.645 0.95 or 95% 0.10 1.96 0.98 or 98% 2.33- 0.99 or 99%- 2.575 Hypothesis Testing Critical Values

Z is the standard normal random variable. The table value for Z is the value of the cumulative normal distribution. For example, the value for 1.96 is P(Z<1.96) = .9750. Find the p-value using the standard normal table.

A standard normal table, also called the unit normal table or Z table, is a mathematical table for the values of Φ, which are the values of the cumulative distribution function of the normal distribution.