Table A in the textbook gives normal curve cumulative probabilities for standardized scores. This is because they are conditional probabilities and the table is a joint probability table. Probability distribution table explained. Hundreds of statistics problems explained, step-by-step. Free calculators and homework help forums.

You can use this z-table to find probabilities associated with the standard normal curve. Shows how to find probabilities of random variables. A probability distribution is a table or an equation that links each outcome of a statistical experiment with its probability of occurrence. A standard normal distribution table shows a cumulative probability associated with a particular z-score. Table rows show the whole number and tenths place of the z-score.

How to calculate probabilities in a normal distribution from a z-score table. How to read a z-score table. The Empirical Rule is useful for finding simple probabilities for a distribution, but it is necessary to use a table of values to find more specific probabilities. Sal uses the contingency table chi-square test to see if a couple of different herbs prevent people from getting sick.

### The Z-table

A key stage 3 revision and recap resource for maths, covering probability including sums, surveys and events. Copy and complete the following table, which shows the sum of their scores:.