Standard Deviation Table Percentages. Sigma 5 σ 5. The standard normal distribution.
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Z p 0. The standard normal distribution. Any normal distribution can be standardized by converting its values into z scores z scores tell you how many standard deviations from the mean each value lies.
You can also use the table below.
You administer a memory recall test to a group of students. Around 68 of scores are within 2 standard deviations of the mean around 95 of scores are within 4 standard deviations of the mean around 99 7 of scores are within 6 standard deviations of the mean. If the percent deviation is positive it signifies your mean is higher than expected. The standard normal distribution.
